【摘要】 随着农业现代化的发展和农业生产活动日趋频繁,化学农药成为农业面源污染的重要因素之一。选取洞庭湖区棉花田,通过使用抗虫品种的纯种代以及可降解的地膜覆盖,研究了露地、地膜全覆盖、地膜半覆盖等生物防治处理下施用农药对病虫害发生情况及棉花产量、品质的影响。更多还原

【Abstract】 With the development of agricultural modernization,and agricultural production activities are more and more frequently,the chemical pesticides have become one of the most important pollution factors in agricultural non-point source pollution.The cotton fields in Dongting Lake region were chosen for this experiment.Through using pure-bred generation of disease-resistant varieties and plastic mulching,the influences of pesticides application on disease,insect pest,yield and quality of cotton with different biological control treatments(open field,complete plastic mulching and half plastic mulching) were researched.更多还原