论文部分内容阅读
由于工业的日益发展,本世纪下半叶以来,世界各国大量使用化学农药防治农林害虫,造成了严重的环境污染、破坏了自然界的生态平衡。因此寻求无公害的方法和手段防治害虫,是世界各国都在积极研究的一个新课题。白僵菌是广泛存在于自然界的一个真菌菌种,它对多种农林害虫具有很强的寄生能力。国内早在五十年代就研究过利用白僵菌防治大豆食心虫,马尾松毛虫等。但一般认为白僵菌只有在高温高湿的环境下才能繁殖生长。在寒冷、干旱的我省开展以菌治虫是否可行,生物防治这个方向性的向题。
Due to the development of industry, since the second half of this century, extensive use of chemical pesticides to control agricultural and forestry pests in various countries in the world has caused serious environmental pollution and destroyed the ecological balance in nature. Therefore, seeking pollution-free methods and means to control pests and diseases is a new topic that all countries in the world are actively studying. Beauveria bassiana is a fungal species widely found in nature, it has a strong parasitism on a variety of agricultural and forestry pests. As early as the fifties domestic research on the use of Beauveria bassiana control of soybean, Dendrolimus punctatus and so on. Beauveria bassiana is generally considered to reproduce and grow only in hot and humid conditions. In the cold and drought in our province to carry out the bacterial pest control is feasible, biological control of the direction of the problem.