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一、地膜覆盖增产效益 1984年,山西全省地膜覆盖的花生水地平均亩产511斤,比对照307斤增产66.4％;旱地平均亩产364斤,比对照234斤增产55％。晋西北的河曲县试验了地膜覆盖花生440亩,平均单产550斤,比对照增产50％。临县试验19.5亩,平均单产532斤,比对照增产45％。地处塞外高原的怀仁、天镇、灵邱、广灵、山阳县试验,单产大都在500斤以上,增产率达40％。
First, the plastic film mulching production efficiency In 1984, the province’s mulching plastic mulching water land average yield of 511 kg, 66.4% increase over the control 307 kg; dry land average yield of 364 kg, 234 kg more than the control yield of 55%. Hequ County, northwestern Shanxi, tested 440 mu peanut mulching with an average yield of 550 pounds, an increase of 50% over the control. Linxian test 19.5 acres, the average yield of 532 pounds, 45% more yield than the control. Huai-ren, Tianzhen, Lingqiu, Guangling and Sanyang counties, located in the outlying areas of the Great Wall, have a yield of more than 500 kilograms and an increase rate of 40%.