一种新型生物制剂对水稻普施特药害的降解作用

【研究目的】黑龙江省牡丹江农垦世绿肥业有限公司研发的新型生物制剂对水稻普施特药害的降解作用。【方法】采用室内生物测定的方法，以根长和根鲜重为生测指标，研究了水稻幼苗对除草剂普施特的敏感性和生物制剂对普施特的降解效果。【结果与结论】试验结果表明，普施特强烈抑制水稻幼苗生长。生物制剂对普施特有良好的降解效果，保护率随生物制剂用量的增加呈递增趋势，但施用量增加到一定幅度使保护速率的增幅趋于平衡。对根长和根鲜重保护率最高可分别达到132%和158%。生物制剂的最佳经济用量为30~60 kg/hm2。

Study on the Antidotal Effect of a New Type of Biological Reagent on Imazethapyr Damage in Rice

Objective]Sensitivity of rice seeding and antidotal effect on imazethapyr from a new type of biological reagent were studied Method]by a room bioassay. And the root length and the fresh weight of roots of rice were as biological parameter.Results and conclusion]The experiment results show that imazethapyr could significantly suppress the growth of rice seeding and the antidotal effect of biological reagent is good. The protected rate of the reagent was an increasing trend by increased dose of biological reagent, but the increased range was tended to be balanced. The maximum protected rate of biological reagent to rice seeding from imazethapyr injury on root length and root fresh weight were 132 % and 158 % respectively. The optimum economic dose of biological reagent was 30~60 kg/hm2.