土壤温度和降水量对乙草胺药效及药害的影响 - 黑龙江农业科学.PDF

　黑龙江农业科学 2004, (1):13～ 15 　Heilongjiang Agricultural Sciences　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　 , , 　, , 　, (黑龙江省农科院植保所, 哈尔滨 150086) :田间小区试验结果表明, 土壤温度对乙 胺药效和药害影响没有明显规律, 降水量及除 剂 用量对乙 胺的药效和药害均有一定的影响。乙 胺的药效和药害并不是随着土壤温度的升高呈 现逐步增高的趋势, 而是随着乙 胺用药量的增加及施药前降水量的增高而提高。如果施药前7d 没有降水会显著降低乙 胺的除 效果和对大豆的药害程度。乙 胺药害可使大豆苗期株高、鲜 重和叶片数有所降低, 成株期株荚数、株粒数减少, 导致大豆减产0%～50.6%。 药害严重时可使 大豆晚熟。 :土壤温度;降水量;乙 胺;药效;药害 :S 482.4　　:A 　　:1002-2767 (2004)01-0013-03 Influence of Soil Temperature and Rainfall on Effect and Injury of Acetochlor HUANG Chun-yan, CHENTie-bao, WANGYu, HUANGYuan-ju, C NGLin, PIA De-wan (Plant Protection Institute of Heilongjiang Academy of Agricultural Sciences, Har in 150086) Abstract:The plot experiment results show ed that rainfall and her icide dosage are factors w hich in- fluence o viously the effect and injury of acetochlor.The effect and injury of acetochlor w eren t influ- enced o viously y soil temperature.The control effect and injury of acetochlor increased w ith ace- tochlor dosage raising and rainfall increasing efore 7d using acetochlor.Soy ean growth w as inhi ited lightly, the plant height, fresh weight, leaves, pods and grainsw ere reduced and the rate of yield loss w as 0%～50.6%due to the injury of acetochlor.Ripeming date could e delayed w hen the injury was serious. Key words:soil temperature;rainfall;acetochlor;effect;injury 　　, , , , 。 70%。 1　材料与方法 , 1.1　 。 14。90% , (:acetochlor, , 。 )。, , [ 1, 2] , 2.88%, pH 6.87。 。 (Ech inoch loa cr us -g al li )、(E r ioch loa v il losa ) , (S etaria v irid is ), :2003-06-10 　:“”“”(2