Effects of Nitrogen Application Rate on Maize Growth and Soil Nutrients under Mode of Long-Term Maize Straw Returning
Song Chaoyu
Gong Mingbo
Gao Qian
Wang Shengjian
Zhu Pisheng
Gao Junling
Abstract：Adopting two factors split plot design,under the modes of long-term maize straw returning (SR) and no straw returning(NSR),the effects of nitrogen application rate on maize growth and yield formation,soil nutrients were studied.The results showed that under the mode of SR,the soil organic matter and rapidly-available potassium content obviously increased,the rapidly-available phosphorus changed small,the plant height,stem diameter,ear leaf width,ear length and grain yield and starch content increased,the grain protein content decreased.At the small bellbottom stage and huge bellbottom stage,the dry weight under the SR treatment was higher than that of NSR treatment.Under the mode of SR,the recommend nitrogen application rate of summer maize was 207.3 kg/hm2,which increased by 17.4 kg/hm2 than that of NSR treatment,and the grain yield increased by 398.5 kg/hm2.
Keywords：Maize straw returningNitrogen fertilizerSoil nutrientYieldQuality
Publication Date：2017-10-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：5( 55-59 )