【作者】 周怀平； 杨治平； 李红梅； 关春林；

【Author】 Zhou Huaiping, Yang Zhiping, Li Hongmei, Guan Chunlin(Institute of Soil & Fertiliser, The Key Laboratory of Soil Environment and Nutrient Resources; Institute of Farm Product Comprehensive Utilization Shanxi Academy of Agricultural Sciences, Taiyuan 030031. China)

【机构】 山西省农业科学院土壤肥料研究所、山西省土壤环境与养分资源重点实验室； 山西省农业科学院农产品综合利用研究所；

【摘要】 在我国北方半湿润偏旱区的山西省寿阳县旱农试验区,经过长达10年的定位试验结果表明,施肥可使水分利用效率明显提高,是不施肥处理的2.25倍;旱地玉米产量和水分利用效率,同时受生育期降水量和播前土壤贮水量两个因素的影响。干旱年份,玉米产量的提高更依赖于土壤水分、养分的协调供应,施肥的增产效果受到土壤水分亏缺的限制,合理施肥、培肥土壤、保蓄水分,可增强旱地玉米抵御干旱的能力;丰水年份和正常年份,肥料的增产作用得到充分发挥,丰水年份应注意蓄水保墒。更多还原

【Abstract】 The studies were conducted in Shouyang experimental site, there is arid area in subhumid region. It was demonstrated that, after fertilizer application, water use efficiency was 2. 25 times that of the original without fertilisation, after the ten-year experiment. Maize yield and water utilization efficiency were influenced by rainfall in the growth period and water storage before sowing. In arid year, both soil moisture and nutrient supply determined the yield maize. The effect of fertilization on yield was influenced by water storage in soil moisture and nutrient supply. The effect of fertilization on yield was influenced by water store in soil. Rational application of fertilizer, soil fertility improvement and water store in soil could enhance maize’s resistance against draught. In rich and normal rainfall yield, feriliser played an important role on maize yield. However attention should be paid to reserve water in rich rainfall years.更多还原