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为了研究春小麦高产栽培技术,八七年我们选择影响春小麦产量的三个主要因素(水分、肥料、密度)进行回归正交试验,探索春小麦产量与水、肥、密之间的关系。试验在乌盟凉城灌溉试验站进行。试区土壤为砂壤土,容重1.3—1.45克/立方厘米,田间持水量18—19％;地下水埋深25—30米;无霜期135天左右;多年平均降水量436.8毫米(小麦生育期4—7月多年平均208.7毫米);蒸发1971.8毫米;半干旱地
In order to study the high-yielding spring wheat cultivation techniques, we selected the three main factors (moisture, fertilizer, density) that affect the yield of spring wheat in August and August to carry out regression orthogonal test to explore the relationship between spring wheat yield and water, fertilizer and density. The experiment was carried out at the Wushan Liangcheng Irrigation Experimental Station. The soil in the trial area is sandy loam with a capacity of 1.3-1.45 g / cm3, field capacity of 18-19%, groundwater depth of 25-30 m, frost-free period of about 135 days, and annual average precipitation of 436.8 mm (wheat growth period of 4-7 Month average 208.7 millimeters); evaporation 1971.8 millimeters; semi-arid lands