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引言现代的农业实践充分证明,作物种子表面具有农药层能防治各种植物病害(Crosse,1971;Kulkarni,1980;Lescar,1981)和各种植物虫害(Mckinley,1981;Shurtleff 1966;Sukhani,1980)。这种药剂的散布方式不须分开喷药和混合操作。当种子播入土中,药剂也被送到最有利于保护和避免伤害萌芽的种子地方。用除草剂处理过的作物种子进行播种,来防除杂草的技术,目前还没有被农民应用。然而用扑草灭处理苜蓿(Miedicago sativa L.)种子,使每粒种子周围形成石灰层或石膏层
INTRODUCTION Modern agricultural practices have demonstrated that the application of a pesticide layer to the surface of crop seeds can prevent various plant diseases (Crosse 1971; Kulkarni 1980; Lescar 1981) and various plant pests (Mckinley 1981; Shurtleff 1966; Sukhani 1980) . This medicine is not to be sprayed and mixed separately. When the seeds are sown in the soil, the agent is also sent to the place that is most conducive to the protection and avoidance of sprouting seeds. The use of herbicide-treated crop seeds for seeding weeds has not yet been applied by farmers. However, the seeds of alfalfa (Miedicago sativa L.) were exfoliated with prometryn so that a layer of lime or gypsum was formed around each seed