旱作农业生物技术（二）病虫防治技术李永昌，柴跃进，温建云病虫害是严重威胁农业生产的自然灾害之一，会造成粮食产量下降，品质降低，甚至大面积绝收。而病虫害防治技术是确保农业生产稳步发展的车要途径之一，是机械化旱作农业生物技术中不可缺少的一项内容。１．病虫... Dry Farming Agricultural Biotechnology (II) Pest Control Techniques Li Yongchang, Chai Yuejin, Wen Jianyun Pest and diseases are one of the natural disasters that seriously threaten agricultural production, which will result in the decline of grain output, the decrease of quality and even the absolute loss of large area. The pest and disease control technology is one of the ways to ensure the steady development of agricultural production. It is an indispensable part of mechanized dry farming biotechnology. 1. Diseases and pests ...