normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly">摘要 硫磺熏蒸可以有效预防白粉病的蔓延及扩大。结合15%三唑酮可湿性粉剂800倍液喷施,可以达到很好防治效果。
normal style="MARGIN: 0cm 1cm 0pt 0cm; TEXT-INDENT: 24.5pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly">关键词:白粉病 硫磺熏蒸
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 27pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly">白粉病是草莓主要病害之一,在温、湿度较高的条件下极易发生,尤其在棚栽草莓生产中,白粉病的发病率很高,发生面积较大。白粉病主要危害植株叶片,此外它还可侵害叶柄、花梗和果实,大大降低了草莓的产量及果品品质,制约部分草莓品种的发展。目前国外多采用硫磺熏蒸预防白粉病,效果较佳。东港市草莓研究所在日本专家的指导下,近几年开始试验此项技术,防治白粉病效果较好。本次试验再次证明用硫磺熏蒸白粉病具有明显预防效果。
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 32pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly">1、材料与方法
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 27pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly">试验地设在东港市草莓研究所示范场日光温室内,棕壤土,地力均匀。日光温室东西长53m,南北宽8m,供试品种为丰香,株行距15×25cm,垄距90cm,2001年9月1日定植,10月10日扣棚模,10月26日上帘,其它管理同常。
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 32pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly">1.1 熏蒸方法
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 27pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly">于2001年10月27日开始熏蒸。每个熏蒸器熏蒸范围为60m2,熏蒸器悬挂在距后墙3m、距地面高1.5m处,整个棚内设5个熏蒸器,每个熏蒸器每次投放硫磺粉20-30g,于每日17时放帘后,保持棚内密闭,通电加热2小时,每隔6天更换一次硫磺粉,连续熏蒸20天止。
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 32pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly">1.2 调查项目及方法
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 27pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly">熏蒸前:按照东、西、南、北、中五个方位随机抽查10株苗,记录病叶数,计算病叶率和病情指数、调查时间为10月26日。
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 27pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly">熏蒸期间:11月7日,按东西分A、B两个小区,A区喷施15%三唑酮可湿性粉剂800倍;B区未喷施。并进行随机抽查10株苗,调查病叶率及病情指数。
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 27pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly">熏蒸完毕:11月17日,分别在A、B两个小区内按5个方位随机抽查10株苗,调查病叶率、计算病情指数,求出防治效果。
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 27pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly">病叶的病情按下列标准分级:0级:无病斑;1级:病斑面积占整个叶面积5%以下;2级:病斑面积占整个叶面积6-10%;3级:病斑面积占整个叶面积11-25%;4级:病斑面积占整个叶面积26-50%;5级:病斑面积占整个叶面积50%以上。
normal style="MARGIN: 0cm 0cm 0pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto"> 病情指数=
normal style="MARGIN: 0cm 0cm 0pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto">防治效果(%)=
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 28.5pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly">2、结果与分析
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 32pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly">2.1 对白粉病防治效果
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 27pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly">从表1中可以看出,在用硫磺粉熏蒸的第10天,对白粉病的病菌具有一定的抑制作用。说明硫加热后,产生硫蒸汽,随着空气的流动充满整个空间。一是对空气中飘浮的白粉病孢子吸附在其表面上,使其失去活力,不能继续扩散;二是对植株上的寄生孢子也有抑制作用,不能产生新的孢子,所以病斑不能扩大。
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 51.25pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly">表1
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 49pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly">项目
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly">时 间
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>病叶率
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>(%)
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>病情指数
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>防治效果
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>(%)
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>熏蒸前(CK)
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>10月27日
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>7.1
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>4.28
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>——
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>熏蒸后十天
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>11月7
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>5.7
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>3.42
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>20.09
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 27pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly">从表2中可以看出,在用硫磺熏蒸的同时,使用15%三唑酮可湿性粉剂800倍,配合防治白粉病,效果更好。
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 27pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly">
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 27pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly">
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 27pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly">
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 27pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly">
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 54.3pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly">表2
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 39.75pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly">项目
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly">时间
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>病叶率
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>(%)
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>病情指数
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>防治效果
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>(%)
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>熏蒸前(CK)
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>10月27日
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>7.1
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>4.28
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>——
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>熏蒸完毕
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>11月17日
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>4.3
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>1.71
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>60.05
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>熏蒸兼喷施三唑酮11月17日
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>0
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>0
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>100
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 32pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly">2.2 对草莓商品品质的影响
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 27pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly">商品草莓品质由果个大小、果形、色泽、口味、硬度等因素构成。从表3中可以看出,熏蒸后,采收的草莓果与往年同期比较果实硬度增强,可溶性固形物含量提高1个百分点。说明使用硫磺熏蒸预防白粉病,对草莓果实品质有所改善。
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 38.25pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly">表3
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 24pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly">项目
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly">
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly">时间
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>果形
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>果色
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>整齐度
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>硬度
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>(kg/cm2)
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>可溶性固形物含量(%)
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>丰香
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>2001(CK)
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>圆锥
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>红
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>整齐
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>0.45
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>9
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>丰香
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>2002
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>圆锥
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>红
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>整齐
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>0.46
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>10
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 32pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly">
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 32pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly">2.3 对草莓产量的影响
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 27pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly">施用硫磺熏蒸的草莓棚比邻近种植丰香草莓棚同期比较有增产作用,一、二级序果平均单果重增加3g,最大单果重增加5g,垄产量增加1-2kg,每亩增产240.8kg,增产幅度达12.9%。增加经济效益达700余元。
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly"> 表4
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly"> 项目
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly">
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly">处理
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>一、二缓序果均重(g)
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>最大单果重(g)
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>平均垄产量(kg)
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>亩产量
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>(kg)
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>增产
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>(%)
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>硫磺熏蒸棚
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>40
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>85
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>18.82
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>2107.84
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>12.9%
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>邻近棚
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>(CK)
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>37
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>80
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>16.67
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>1867.04
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly" align=center>——
normal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 32pt; LINE-HEIGHT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-line-height-rule: exactly">3、结论
normal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 20pt; mso-line-height-rule: exactly">硫磺熏蒸对白粉病病原菌有一定抑制作用,可以有效地防止白粉病的蔓延和扩大,从而减轻白粉病对植株的危害。借助于三唑酮类药物,可以有效消除白粉病,达到理想防治效果。同时减轻了农药的使用量和劳动力,从而降低了生产成本