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水稻是我省粮食生产中的主要作物,播种面积约占耕地总面积的40%,产量占粮食总产量的60%左右.在水稻的生产过程中,稻螟的发生面积常占水稻各种虫害面积的第一位,1980达1,400万亩,虽然经过防治,仍损失稻谷0.931亿斤. 水稻的耕作制度,是依据自然条件、社会制度及科学技术水平等因素而形成的一种生产形式,常因上述因素的变化而起变革;相反的,耕作制度的变革,又常引起农业生态系统的变化.水稻螟虫的群落,直接受到食物链和空间链的制约,因而稻螟的发生及其危害也常因耕作制不同而相应地起着明显的改变.现将我省对水稻耕作制度的变革与水稻螟虫的变化情况的调研所得,谈一谈水稻螟虫的防治问题.
Rice is the main crop of grain production in our province, sown area accounts for about 40% of the total area of cultivated land, the output accounts for about 60% of the total grain output.In the rice production process, the occurrence area of rice borer often accounts for various pests of rice The area of 1,980 hectares in 1980 reached a loss of 931 million kilograms of rice after the prevention and treatment of rice farming system is a form of production based on factors such as natural conditions, social system and science and technology level. The change of the farming system often leads to the change of agro-ecosystem.The community of rice stem borers is directly controlled by the food chain and the space chain, so the occurrence and damage of the rice stem borers are also often Due to different tillage system and accordingly play a significant change.Currently, the province of rice farming system changes and changes in rice stem borer income, talk about the prevention and treatment of rice stem borer problems.