摘要
１９９２～１９９６年在陕西渭北旱塬合阳县甘井乡进行了冬小麦产量的土壤养分限制因子与高产高效施肥指标试验。结果表明，在渭北旱塬，氮、磷是冬小麦产量的限制因子，钾、铁、锰、镁、硼为非限制因子。限制因子对冬小麦产量的效应Ｐ２Ｏ５＞Ｎ，效益最佳平台区施肥量歉水年Ｎ９０．０３～１０４．１７ｋｇ／ｈｍ２，Ｐ２Ｏ５８３．７４～９１．２９ｋｇ／ｈｍ２；平水年Ｎ９７．３０～１３２．３１ｋｇ／ｈｍ２，Ｐ２Ｏ５８９．６５～１０６．８８ｋｇ／ｈｍ２．
From 1992 to 1996, the experiment of soil nutrient as yield limitation factors and the fertilizer supply index of high yield and great profit in winter wheat had been carried out in weibei dryland, Heyang,Shaanxi.The result showed that N and P were the yield limitation factors of winter wheat,K,Fe,Zn,Mn,Mg and B were not the limitation factors in Weibei dryland.The yield responses of winter wheat to the limitation factors were in the order of P2O5>N.The fertilizer supply ranges of optimum enconomic benefit were N 90.03￣104.17 kg/hm2,P2O5 83.74￣91.29 kg/hm2 in deficit water year and N 97.30￣132.31 kg/hm2,P2O5 89.65￣106.88 kg/hm2 in common water year.
出处
《西北农业大学学报》
CSCD
北大核心
1998年第1期74-77,共4页
Journal of Northwest Sci-Tech University of Agriculture and Forestry（Natural Science Edition)
基金
陕西省自然科学基金
国家"八五"旱地攻关项目
关键词
冬小麦
土壤养分
施肥指标
渭北旱塬
施肥
winter wheat,soil nutrient,fertilizer supply index,Weibei dryland
