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随着地膜覆盖栽培的兴起和发展,地膜的研制加快了,科研部门相继推出了功能各异的农用薄膜,现介绍一批如下:1.防虫地膜:根据害虫对光的趋避性,科技人员把地膜加工成银灰色,这种地膜具有反射紫外线的特点,可驱避蚜虫、黄条跳甲和象甲等害虫,同时还能减轻病毒的危害。科研部门新近还推出了银黑双面膜,它既能防虫又能灭草。2.防病地膜:它是利用不同作物具有专一性的病害而生产的专用地膜。如玉米地膜,棉花地膜等。这种地膜在合成压延过程中有针对性地混入了某种
With the rise and development of mulching cultivation, the development of mulch has been accelerated, and research departments have successively launched agricultural films with different functions. Now, a batch of mulching films are introduced as follows: 1. Pest mulching film: According to the repellent nature of pests to light, Membrane processed into silver-gray, this film has the characteristics of UV reflection can repel aphids, yellow striped beetles and weevils and other pests, but also reduce the harm of the virus. The research department has also recently introduced a silver-black double-sided film, which can both pest control and weeds. 2. Disease prevention film: It is the use of different crops have a unique disease and the production of special plastic film. Such as corn film, cotton film. This film in the synthesis process of rolling a specific mix of some