Crop Cultivation & Genetic Breeding

Effects of Reduced Application Rate of Nitrogen on Yield and Economical Benefit of Wheat under Different Tillage Methods

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  • (1.Institute of Plant Nutrient,Resources and Environment,Henan Academy of Agricultural Sciences,Zhengzhou 450002,China;2.Experiment Station of Agricultural Science in Suiping County,Suiping 463100,China)

Received date: 2019-12-20

  Online published: 2020-06-15

Abstract

The economical benefits of wheat of EF(CK,nitrogen application rate of 300 kg/ha),RF10(reducing 10% of nitrogen fertilizer),RF20( reducing 20% of nitrogen fertilizer) and RF30( reducing 30% of nitrogen fertilizer)treatments were studied under vertical rotary tillage [FL,(30±5) cm] and traditional rotary tillage [XG,(12±5) cm] methods in 2017—2018 and 2018—2019 respectively,so as to provide reference for reducing nitrogen fertilizer application and efficiently utilizing resources.The results showed that,compared with FL-EF treatment,FL-RF20 treatment did not decrease the wheat yields in two wheat seasons;FL-RF20 treatment obtained higher net income and ratio of output to input,while FLRF10,FL-RF30 treatments decreased net income and ratio of output to input in the first wheat season,and increased in the second wheat season,respectively. The net incomes of FL-EF,FL-RF10,FL-RF20,FLRF30 treatments were 8 030. 5,7 342.4,8 891.7,5 742.9 Yuan/ha in 2018,and 13 791.5,14 231.2,14 616.8,13 823.8 Yuan/ ha in 2019,respectively.Compared with XG-EF treatment,XG-RF20 treatment did not decrease the wheat yields in two wheat seasons;XG-RF20 treatment obtained higher net income and ratio of output to input,while XG-RF10,XG-RF30 treatments decreased net incomes in two wheat seasons.The net incomes of XG-EF,XG-RF10,XG-RF20,XG-RF30 treatments were 9 190.0,8 832. 5,9 714.7,7 205.4 Yuan/ha in 2018,and 13 452.6,13 257.1,15 022.4,12 465.6 Yuan/ha in 2019,respectively.Compared with traditional rotary tillage method,total input of vertical rotary tillage method increased by 375.0 Yuan/ha,but net income of vertical rotary tillage method increased by 217.7 Yuan/ha.Overall,vertical rotary tillage method is better than traditional rotary tillage method,which could increase the soil layer depth,improve soil structure,adjust soil function,and promote sustainable productivity.

Cite this article

NIE Shengwei, ZHANG Haoguang, ZHANG Qiaoping, XU Jidong, ZHANG Yuting . Effects of Reduced Application Rate of Nitrogen on Yield and Economical Benefit of Wheat under Different Tillage Methods[J]. Journal of Henan Agricultural Sciences, 2020 , 49(6) : 16 -22 . DOI: 10.15933/j.cnki.1004-3268.2020.06.003

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