知识与财富的链接
本研究使用5种杀菌剂和1种微肥于油菜苗期2~3片真叶期进行灌根处理,以传统的石灰处理方法比较,评价不同处理对油菜根肿病的防治效果和对油菜产量损失的影响。5种杀菌剂处理、微肥以及石灰处理均对油菜根肿病有较好的防效,其中50%多菌灵可湿性粉剂防效达90.82%;从产量损失方面比较,10%氰霜唑悬浮剂、50%多菌灵可湿性粉剂,75%百菌清可湿性粉剂和60%硫磺·敌磺钠可湿性粉剂处理可显著减少根肿病引起的产量损失;50%氟啶胺悬浮剂处理较对照增产不显著,而且对油菜生长有抑制作用;油菜根肿病的病情指数与油菜产量呈显著的负相关性,相关系数r=-0.796 2,油菜产量(y)与病情指数(x)的回归方程为y=-32.65x+2 372。
In this study, five fungicides and one micro element fertilizer, by root-drenching method during rapeseed seedling stage (2 to 3 true leaves), and lime treatment, a traditional control method, were chosen to evaluate the control effect on clubroot and yield loss caused by Plasmodiophora brassicae in Brassica napus. Five fungicides, microelement fertilizer and lime treatments have good control effect on clubroot. Control efficacy of 50% carbendazim WP reached 90.82%.10% cyazofamid SC, 50% carbendazim WP, 75% chlorothalonil WP and 60% sulfur·fenaminosulf WP could significantly reduce the yield loss caused by rapeseed clubroot, while 50% fluazinam SC had no effect, but inhibited the growth of rapeseed plants. There was significantly negative correlation between rapeseed production and disease index(r=-0.796 2), and the regression equation of yield(y)and disease index(x)was y=-32.65x+2 372.
