摘要
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。试验结果表明,一定浓度的普施特残留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32%和58%。生物制剂的最佳经济用量为30～60kg·hm-2。
Sensitivity of rice seeding and antidotal effect on imazethapyr from biologics were studied by a room bioassay with the root length and the fresh weight of roots of rice were as biological parameter. The experiment results showed that imazethapyr could significantly suppress the growth of rice seeding and the antidotal effect of biological reagent was good. The protected rate of the reagent was an increasing trend by increased dose of biological reagent, hut the increased range was tended to be balanced.The maximum protected rate of biologics to rice seeding from imazethapyr injury on root length and root fresh weight were 32 % and 58 % respectively. The optimum economic dose of biologics was 30-60 kg· hm^-2.
出处
《黑龙江八一农垦大学学报》
2008年第5期17-20,共4页
journal of heilongjiang bayi agricultural university
基金
黑龙江省教育厅项目"寒地条件下土壤生物活化剂菌种筛选与复配技术的研究"
黑龙江省科技厅国际科技合作项目(WC02208)
黑龙江省教育厅成果转化项目(1151gzh06)
黑龙江省科技攻关项目(GC01B706-2)
黑龙江省教育厅海外学人重点项目(1054HZ026)
黑龙江省科技攻关项目(JC01B509)
教育部攻关项目(JcoIBS09)
黑龙江省科技厅海外学人科技合作项目(FG-02-173)
