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Effects of Nutrient Expert Recommend Fertilization on Yield, Nutrient Absorption and U tilization of Super-High-Yield Summer M aize
Pages: 44-48
Year: Issue:  6
Journal: Journal of Henan Agricultural Sciences

Keyword:  super-high-yield summer maizenutrient expert for maizerecommend fertilizationyieldfertilizer use efficiency;
Abstract: In order to realize the scientific fertilization of super-high-yield summer maize ,the field experiment was conducted to study the effects of nutrient expert recommend fertilization on yield , economic benefit ,nutrient accumulation and fertilizer use efficiency of summer maize .The results showed that the nutrient expert recommend fertilization increased the grain yield by 5.28% ,the economic benefit by 6.71% and the net profit by 1 414 yuan/ha in comparison to the conventional fertilizer application . The nutrient expert recommend fertilization could promote the nutrient absorption and utilization of super-high-yield summer maize and maintain the soil nutrient balance .The partial factor productivity from applied fertilizer was 38.25 kg/kg .The agronomic efficiency of N ,P2 O5 and K2 O was 7.73 ,12.50 and 9.01 kg/kg respectively , and the fertilizer use efficiency w ere 28.76% ,13.15% and 43.31%respectively .The method of maize recommend fertilization was worthy of popularization and application in super-high-yield summer maize .
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