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我国在农业生产中推广地膜覆盖的方法,应用于多种蔬菜中均表现出良好的效果。我们用日本引进的聚乙烯地膜(0.08亳米)覆盖,以洋葱“天津黄桃”品种为材料,对洋葱鳞茎形态发育的影响进行了研究,结果表明:促进根系活力在试验地5厘米土层测温度为:4月份平均日增温2.8℃,5月份为3.4℃,6月份为1.5℃。由于土壤条件的改善,促进了
China’s agricultural production in the promotion of plastic film covering methods used in a variety of vegetables have shown good results. We used the polyethylene film (0.08mm) imported from Japan to cover the onions “Tianjin yellow peach” varieties as the material, the onion bulb morphological development were studied, the results showed that: to promote root activity in the test 5 cm soil layer Measured temperature: average daily temperature in April 2.8 ℃, May was 3.4 ℃, June 1.5 ℃. Due to the improvement of soil conditions, promoted