Nutrient use efficiency and yield-increasing effect of single basal application of rice-specific controlled release fertilizer

Abstract

Abstract: A series of pot and field experiments and field demonstrations showed that in comparing with the commonly used specific-fertilizers containing same amounts of nutrients,single basal application of rice-specific controlled release fertilizer could increase the use efficiency of N and P by 12.2%～22.7% and 7.0%～35.0%,respectively in pot experiment,and the use efficiency of N by 17.1% in field experiment.In 167 field demonstrations successively conducted for 3 years in various rice production areas of Guangdong Province,single basal application of the fertilizer saved the application rate of N and P by 22.1% and 21.8%,respectively,and increased the yield by 8.2%,compared with normal split fertilization.

Key words: Controlled release fertilizer, Nutrient use efficiency, Rice, Single basal application

CLC Number:

S158.3

CHEN Jiansheng, XU Peizhi, TANG Shuanhu, ZHANG Fabao, XIE Chunsheng . Nutrient use efficiency and yield-increasing effect of single basal application of rice-specific controlled release fertilizer[J]. Chinese Journal of Applied Ecology, 2005, 16(10): 1868-1871.

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