摘要
1981—1987年,在大豆的7个生育期,以5种剂量进行筛选,提出在大豆始花期,用地乐胺0.18—0.72毫克a.i./米~2,进行茎叶喷雾,挑治1次,对已寄生于豆株的菟丝子的抑制率达100％,防效80％以上。大豆产量较不防治田块每公顷增加300—750公斤,豆粒品质(粗脂肪和粗蛋白)及发芽率与对照比无显著差异。地乐胺在豆粒中的残留量小于0.2ppm。此技术已推广2万公顷。
This study of dodders (Cuscuta chinensis and C.australis) controlon soybean was conduted from 1981 to 1987.Five dosages were testedduring seven soybean's growing periods.It was proved that at the be-gining of the soybean's flowering period,to spray butralin solution(0.18—0.72mg/m^2 a.i.) upon the leaves and stems for one time,thepercentage of preventability over dodders that have touched soy plantreached 100%,and the percentage was 80%.Besides,there was noharmful effect on the germination percentage and quality (quantity offat and protein) of soya seeds.The butralin residue in soya seed wasless than 0.2ppm.This technique has been applied in 20000 hectaresalready.
出处
《植物保护学报》
CAS
CSCD
北大核心
1989年第4期279-283,共5页
Journal of Plant Protection
