论文部分内容阅读
棉花播种前对苗床土壤进行严格消毒灭菌,能有效地防止病害的发生流行。对苗床土壤进行灭菌处理,应根据当地棉花病害发生情况和防治重点合理选用杀菌剂。一般来说,用杀菌剂处理棉花苗床土壤,主要目的是防
Sowing cotton beds before planting soil sterilized strictly, can effectively prevent the occurrence of disease. Sterilization of seedbed soil should be based on the occurrence of local cotton disease and prevention and control of key rational use of fungicides. In general, the germicide treatment of cotton seedbed soil, the main purpose is to prevent