0．01％芸苔素内酯可溶液剂促进水稻增产及抗御寒露风的效果

摘要

The demonstrative test for the application of 0.01%Brassinolide solution was conducted in the field of double crop-ping late rice which was directly sown on various dates .The results showed that:among different application methods , spraying 300 mL/hm2 0.01%Brassinolide once respectively at the tillering stage , initial rupturing stage , and full heading stage of rice could ob-tain the best yield-increasing effect, and its yield-increasing rate reached 9.65%~16.56% as compared with the control (no spraying).The application of 0.01%Brassinolide could shorten the duration of rice heading , strengthen the resistance of rice to au-tumn low-temperature damage , and it had no obvious impact on rice plant height and was safe to rice .%在不同日期直播的二季晚稻田间进行了0．01％芸苔素内酯不同施用处理的示范试验，结果表明：增产效果以0．01％芸苔素内酯每公顷300 mL在水稻分蘖期、破口初期、齐穗期各喷施1次为最佳，增产率达9．65％～16．56％；施用0．01％芸苔素内酯能缩短水稻抽穗持续时间，增强水稻抗御寒露风的能力，对水稻株高无明显影响，对水稻安全。