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农家肥的积攒多采用传统的方法:将肥堆积在地面,任其自然发酵,由于风吹雨淋,日晒挥发,不但降低肥效而且影响环境卫生。施入地里还易造成作物病虫害。为改变这种不科学的积肥方法,我们在1982—1984年做了积肥盖膜和不盖膜的试验。6月起粪积肥至10月下旬作小麦基肥,一个月后调查苗情,施盖膜肥的麦苗地下害虫危害率仅0.5%,而施未盖膜肥的受害率为1.3%。测产结果:施盖膜肥的亩产651斤,施未盖膜的亩产590.1斤。1983、1984年试验获相似结果。盖膜肥的好处有以下几点:
Accumulation of farmyard more traditional methods: the accumulation of fat in the ground, let the natural fermentation, due to wind and rain, the sun volatile, not only reduce fertilizer but also affect the environment and health. In the field is also easy to cause crop pests and diseases. In order to change this unscientific method of accumulating fertilizer, we did a test of covering fertilizer and non-covering membrane in 1982-1984. Since June, manure was used to make wheat base fertilizer in late October. After one month’s investigation, the damage rate of underground pests was only 0.5%, while that of unsealed film fertilizer was 1.3%. Measured results: Shi Meifu yield of 651 kg per mu, applied to cover the mu produce 590.1 kg. Similar results were obtained in 1983 and 1984. The benefits of covered film fertilizer are the following: