论文部分内容阅读
水稻、小麦是四川主要粮食作物,常年种植面积约8000万亩,占耕地面积的80％左右,产量占粮食总产量的67.7％,在整个粮食生产中占有重要地位。但是病、虫种类繁多,为害严重。每年因病虫害损失粮食一般占总产量的10％左右。在“预防为主、综合防治”的植保方针指引下,使用农药进行化学防治,对确保四川省农业生产起了十分重要的作用。无论是现在或今后,化学防治仍是综合防治中不可缺少的主要措施,也是农业稳产、高产不可缺少的手段之一。随着农田基本建设的发展、水利条件的改善,施肥增多、作
Rice and wheat are the main food crops in Sichuan. The annual perennial planting area is about 80 million mu, accounting for about 80% of the total cultivated land area. The output accounts for 67.7% of the total grain output and occupies an important position in the entire grain production. However, the disease, a wide range of insects, serious damage. Annual loss of food due to pests and diseases generally account for about 10% of total output. Under the guideline of “prevention-oriented and integrated prevention and cure”, the use of pesticides for chemical control has played a very important role in ensuring agricultural production in Sichuan Province. Whether now or in the future, chemical prevention and control is still an indispensable main measure in comprehensive prevention and control and one of the indispensable means for ensuring stable and high-yield agriculture. With the development of farmland infrastructures, the improvement of water conservancy conditions, the increase of fertilizers, and making