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中宁县七星渠以南的缓坡丘陵洪积扇,地形较为平坦,有一定的灌溉条件,但耕种时间短,熟化土层薄,土壤有机质及养分含量很低,漏水漏肥严重,种植粮食作物产量低而不稳。1983年进行了地膜复盖花生栽培试验。试验设在城关公社林场,盖膜栽培的面积0.95亩,以不盖膜的0.09亩为对照。土壤为草甸灌淤土,地下水位约在2米以下,质地沙偏轻。前茬糜子。春施碳铵每亩100斤,生长后期根外喷磷肥一次。花生品种为“徐系一号”,亩播量35斤,行株距1.1×1.5尺,每穴3粒,南北行向,
Zhongning County Qixingqu gentle slope hills south of the alluvial fan, the terrain is relatively flat, there are some irrigation conditions, but the cultivation time is short, thin layer of maturity, soil organic matter and nutrient content is very low, leaking serious leakage of fertilizer, the production of food crops Low and unstable. 1983 mulching film mulching cultivation experiments. The experiment was set in Chengguan Commune Forest Farm, covering an area of 0.95 mu of membrane cultivation, with 0.09 mu of non-membrane as control. Soil for meadow irrigation silt, groundwater level is about 2 meters below the texture of sand is too light. Precursor millet. Spring Shi ammonium bicarbonate 100 pounds per mu, the latter part of the root growth of phosphate fertilizer. Peanut varieties for the “Xu Department No. 1” acres of sowing, line spacing of 1.1 × 1.5 feet, three holes per hole, north-south line,