Effects of fertilizers and manure on yields of wheat and oilseed: Results from a 22-yr fertilization trial in rain fed region of China
文献类型： 会议论文
第一作者： S. M. Yang
作者： S. M. Yang 1 ; J. R. Song; W. Y.Yue; J. G. Wang; T. W.Guo; S. S. Malhi;
作者机构： 1.Institute of Soil and fertilizer, Gansu Academy of Agricultural Sciences, Lanzhou 730070, China
关键词： Farmyard manure;nitrogen;nutrient interactions;oilseed;phosphorus;potassium;wheat;yield
会议名称： Plant Nutrition for Food Security,Human Health and Environmental Protection
主办单位：
页码： 1170-1171
摘要： A long-term (1982 to 2003) field experiment was conducted to determine the effects of N, P and K mineral fertilizers and farmyard manure on seed yield of 18-yr winter wheat (Triticum aestivum L.) and 4-yr oilseed (3-yr canola, Brassica napus L.; 1-yrflax, Linum usitatisimum L.) on a Huangmian soil near Tianshui, Gansu, in the Loess Plateau of China. Two main plot treatments were without and with manure (M), and four sub-plot fertilizer treatments were check (Ck), N, NP and NPK. Seed yield decreasedin the order of MNPK >= MNP>MN >= NPK > NP > M > N > Ck for wheat and MNPK > NPK >= MNP > MN >= NP > M > N > Ck for oilseed. Seed yield of wheat in Ck in 2002 was 36% of that in 1982. The effect of manure and fertilizers on seed yield was in the order ofM > N > P > K for both crops. Yield response to fertilizers (i.e., % increase in seed yield from fertilizers over the Ck) depended on M application as well as the kind of crop. For both crops, yield response to N, P and K fertilizers was much greater inno manure compared to manure treatments. Without manure, yield response to N, P and K fertilizers was greater on oilseed than wheat. With manure, yield response to N and P fertilizers was greater on wheat than oilseed, but the yield response to appliedK was greater on oilseed than wheat. The findings suggest that it is important to have a balanced application of fertilizers and manure to maximize crop production.
分类号： Q945.1
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