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玉米心叶中具有白僵菌生长的适宜温、湿度条件,利用少量培养料加以沙子(或炉灰渣)等作填充料便可使白僵菌得以繁殖,同时防治了玉米螟。调查表明:在玉米心叶中培养白僵菌可增殖6—8倍,治螟效果达68.4—94.5％(平均为86.2％),相当于田间撒颗粒剂。可比田间撒颗粒剂提前施用期7—10天。由于此时玉米植株矮小,便于投药。玉米心叶培养白僵菌可以大大简化生产流程,取消了室内三级培养工序,减少了杂菌污染,节省人力、物力,降低生产成本。同时做到繁治结合,各户农民可以自繁自用,繁而易行,是当前治螟工作上一项新方法。
Beauveria bassiana can be propagated with the suitable temperature and humidity for the growth of Beauveria bassiana in the heart of corn and the sand (or ash) as a filler. The investigation showed that Beauveria bassiana could be propagated 6-8 times in corn heart leaves, and the effect of controlling borer reached 68.4-94.5% (average 86.2%), equivalent to the field sprinkling agent. Compartment sprinkle granules ahead of the application period of 7-10 days. Because of the short corn plants at this time, easy to dosing. Beauveria bassiana can greatly simplify the production process of corn heart leaves, eliminating the indoor three-stage culture process, reducing the contamination of bacteria, saving manpower and material resources and reducing the production cost. In the meantime, due to the combination of traditional Chinese medicine with traditional Chinese medicine, peasants in every household can use themselves freely and easily. It is a new method for the current management of rice borers.