摘要
大田试验结果表明：与不施用ＤＰＣ处理相比，施用ＤＰＣ处理的棉花株高和蕾铃脱落率均有所下降，其成铃数和产量分别提高１０．００％ ～１０．０４％ 和７．４６％ ～８．１３％ ；棉田盲蝽象、棉铃虫和玉米螟的累计虫量分别下降１８．９０％ 、３８．８９％ 和４０％ ～５０％ ，盲蝽象和棉铃虫对蕾铃的为害率分别下降１５．０１％ 和３９．７４％ ～６６．５５％ ；棉田天敌累计数量上升１３．４９％ 。大田普查结果与上述结果相似。
Field experiments results indicated that in comparison with the treatment of not applying DPC, after applying DPC, both the height of cotton plant and the shedding rate of cotton bud and boll decreased to a certain extent, and the adult bolls and yield of cotton increased by 10.00%～10.04% and 7.46%～8.13% respectively; the accumulative number of leaf bug, Helicoverpa armigera and Ostrinia furnacalis in cotton field decreased by 18.90%, 38.89% and 40%～50% respectively, the rate of injured buds and bolls resulting from leaf bug and H. armigera dropped by 15.01% and 39.74%～66.55% separately; the accumulative number of enemy in cotton field went up by 13.49%. The field investigation results were similar to the above mentioned results.
出处
《江西农业学报》
CAS
1999年第4期41-45,共5页
Acta Agriculturae Jiangxi
关键词
棉花
DPC
生长发育
昆虫
影响
Cotton
DPC
Growth and development
Insect
Effect
