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小麦地膜覆盖,对晚茬小麦有明显的增产效果。据1984年9个乡,21个点,44亩晚播小麦试验,平均亩产703.8斤,比不盖膜的亩产566.3斤,增产24.3％。一、地膜覆盖对小麦生育和产量的影响 1、地膜覆盖对麦苗的影响根据试验调查,11月中下旬播种的小麦,播后随盖地膜,出苗期比不盖膜的提前3—5天。12月调查,主茎叶片增加1～2片。翌年3月5日调查,株高、叶长、次生根、单株鲜重分别增加11.5厘米、2.6厘米、6.4条、1.5克。3月25日调查,株高、叶长、次生
Wheat film mulching, late-crop wheat has obvious yield-increasing effect. According to 1984 township, 21 points, 44 acres of evening sowing wheat test, the average yield of 703.8 kg, 566.3 kg more than the muffler, an increase of 24.3%. First, the impact of plastic film mulching on wheat growth and yield 1, the impact of plastic film mulching on wheat germ According to the experimental investigation, the sowing of wheat in mid-to-late November, sowing with plastic film cover, seedling emergence 3-5 days earlier than the non-membrane. December survey, the main stem leaves an increase of 1 or 2 tablets. March 5 the following year survey, plant height, leaf length, secondary roots, fresh weight per plant increased by 11.5 cm, 2.6 cm, 6.4, 1.5 grams. March 25 survey, plant height, leaf length, secondary