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棉花是豫北主要的经济作物之一,棉花病虫害的综合防治,要在全面贯彻“预防为主,综合防治”植保方针指导下,积极开发利用现有科研成果,实行以农业防治为基础,合理施用化学农药,积极做好天敌的保护与利用,协调运用各项技术措施。本着经济、有效、安全、简便的原则,因地制宜进行综合治理。其主要技术措施:1播种期1.1调整种植结构:实行粮棉间隔插花种植。1.2选用抗病品种,实行轮作
Cotton is one of the major economic crops in northern Henan. The comprehensive prevention and control of cotton pests and diseases should be actively developed and utilized under the guidance of the principle of “prevention first, comprehensive prevention and cure” and the existing scientific research achievements, and implemented on the basis of agricultural prevention and control , The rational use of chemical pesticides, active protection and use of natural enemies, coordinate the use of various technical measures. In the economic, effective, safe and simple principle, according to local conditions for comprehensive management. The main technical measures: 1 sowing 1.1 adjust the planting structure: the implementation of grain and cotton interval flower arrangement. 1.2 Selection of disease-resistant varieties, the implementation of rotation