采用自然降水径流小区田间实测法，在典型黄土高原黄绵土种植区域研究了不同耕作措施对玉米主要性状及产量的影响。结果表明:优化施肥+全膜双垄沟播+免耕种植模式有效延长了玉米生育期，且各项经济性状表现最优，产量最高，籽粒产量达6 907.78 kg/hm2，较不施肥处理和常规施肥处理分别提高19.53%、13.06%，可视为黄土高原黄绵土种植区域坡耕地种植稀播作物的最佳模式。

A field test method of natural rainfall and run off plot is conducted on the typical loessal soil in 2008， the effects of different application rates and different cultivation methods on corn yield is studied . The results shows that the optimum pattern is OPT+TR+FM+NT in slope farmland， it prolonged growth period of corn effectively， the economic traits are best， the yield of corn is maximum which is 6 907.78 kg/hm2， 19.53% and 13.06% higher than of the CK and CON . All things considered， OPT+TR+FM+NT is optimum pattern in slope farmland of loessal soil .

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公益性行业(农业)科研专项 “主要农区农业面源污染监测预警与氮磷投入阈值研究”(201003014)部分内容