Changes of crop yields and soil fertility under long-term fertilization and recycled nutrients in manure on black soil ⅡDistribution of nutrients in crops

Abstract

Abstract: Based on a long-term fertilization experiment from 1985 to 1995,the effect of fertilization and crop growing status on the parameters as nutrient concentration of crops,distribution ratio of nutrients in grain and in stalk,and harvested nutrients for producing 1000kg grain products of soybean,maize,and wheat crops were studied.The results indicated that under the normal fertilization condition,the parameters mentioned above were quite stable.Therefore,the parameters obtained from this study can be used for the calculation of nutrient budget of the farmland in this region.

Key words: Black soil, Long-term fertilization, Recycled nutrients

CLC Number:

S158.3

WANG Delu, LIU Hongxiang, WANG Shouyu, MENG Kai, HAN Xiaozeng . Changes of crop yields and soil fertility under long-term fertilization and recycled nutrients in manure on black soil ⅡDistribution of nutrients in crops[J]. Chinese Journal of Applied Ecology, 2001, (6): 845-848.

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Changes of crop yields and soil fertility under long-term fertilization and recycled nutrients in manure on black soil ⅡDistribution of nutrients in crops

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