摘要
在四川棉区棉田施用脱叶剂赛苯隆，可减少因烂铃引起的损失。在８月下旬至９月下旬，日平均气温２０～２６℃的条件下，以１０５～１５０克／公顷的剂量，在棉株下部施用５０％赛苯隆可湿性粉剂，１２天后，棉株下半株脱叶率达９０％以上，烂铃数减少２３．６～５３．５％，皮棉产量增加２．４～１０．８％。而棉株全株施药２１０～３００克／公顷，会使皮棉产量下降。
The small plot trial was carried out to research the effects of 50% thidiazuron WP on cotton in Sichuan province.It was shown that from late Aug. to late Sep. , when the average air temperture changed from 20℃ to 26℃, spraying 50%thidiazuron WP at lower half plant at the dosage of 100￣150g/ha, the defoliation percentage of the leaves located at lower half plant was over 90. 0% in 12 days after the treatments, the rotted bolls were decreased by 23. 5￣53. 5%, and the lint yield was increased by 2.4￣10. 8%. Whereas the application of 50% thidiazuron WP at the dosage of 210￣ 300 g/ha sprayed whole leaves of the plant decreased lint yield by 21.6￣23. 8%.
出处
《农药》
CAS
北大核心
1996年第7期37-39,共3页
Agrochemicals
