【摘要】 为了避免秋季施肥时多次翻耕土壤而损失水分，提高肥水利用率和生产率，对渭北旱塬结合夏闲地翻耕施肥效应（在7月中旬和8月中旬）进行了研究。结果表明，该施肥方式能提高小麦产量、增加土壤NO3-－N的积累和提高肥水利用率及生产效率，同时也能缓解秋播劳力紧张的矛盾，有利于适时适墒播种。更多还原

【Abstract】 In dry plain of Weibei,combining Ploughing summer fallow land and fertilization to increase the fertilizer and water efflciency, the super-advanced fertilization was studied. The results showed that the super-advanced fertilization could inerease the wheat yield, thc NO3-N accumulation in soil and the efficiency of fertilizer and soil water, especially the productivity of Meater. Meanwhile it could relax the tight labour during the autumn sowing time.更多还原