论文部分内容阅读
棉花铃病和红铃虫是我国南方棉区的主要病虫害,也是棉花优质高产的主要障碍因子。近几年来,随着棉花病虫害综合治理研究工作的不断深入,人们已越来越注意棉株受害后的补偿效应,盛承发等(1983)报道,人工摘蕾后,对控制二代棉铃虫有一定的作用,而且可以诱发棉株的超补偿作用,提高棉花产量。熊映清等(1988,1990)指出,人工摘蕾和化学去蕾均可提高棉花产量和质量,并且对烂铃和红铃虫有一定控制效果。但人工
Cotton bollworm and red bollworm are the major pests and diseases in the southern cotton area of our country and are also the main obstacle factors of high quality cotton yield. In recent years, with the deepening of research work on integrated management of cotton pests and diseases, people have paid more and more attention to the compensatory effect after the cotton plant is damaged. Sheng Chengfa et al. (1983) reported that after artificial extraction of buds, Role, but also can induce cotton plant overcompensation, improve cotton production. Xiong Yingqing et al. (1988, 1990) pointed out that both artificial extraction and chemical removal of buds can increase cotton yield and quality, and have certain control effects on rotten bell and pink bollworm. But artificial