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1975年我们在校农场进行春玉米埂种试验,试验结果表明,埂种玉米根系发达,双棒率高,棒大粒多,较平种玉米增产16.5%。去年又种了0.5亩,折合亩产930斤,较平种增产14.6%。一、整地起埂:在施足底肥、耕耙平整的基础上,把地划成2尺宽南北向的带。偶数带起出4寸深的土,放在奇数带上,形成一埂一沟。埂高0.8尺,埂宽2尺,玉米种在埂上。二、冲沟播种:每条埂上冲2条4寸深的沟,行距1.2尺,按株距1尺把种子点种在沟内,覆土2
In 1975, we conducted spring maize experiment on the school farms. The results showed that the root system of maize was developed, the double-rod rate was high, the sticks were bigger and the grain yield was 16.5% higher than that of the maize. Last year planted 0.5 acres, equivalent to 930 kg per mu, an increase of 14.6% compared with the same species. First, the site preparation: In the application of adequate fertilizer, harvesting rake flat on the basis of the land into 2 feet wide north-south belt. Even bands play a 4-inch deep soil, placed on the odd belt, forming a 埂 a ditch.埂 high 0.8 feet, 埂 width 2 feet, corn in the 埂 on. Second, the gully sowing: each 埂 on the red 2 4-inch deep ditch, row spacing 1.2 feet, according to plant spacing 1-foot seeds planted in the trench, soil cover 2