湖北农业科学2025，Vol.64Issue(5)：33-41,55,10.DOI:10.14088/j.cnki.issn0439-8114.2025.05.006
水稻秸秆还田配施氮肥对土壤碳氮及小麦生长特性和产量的影响
Effects of rice straw returning combined with nitrogen fertilizer on carbon and nitrogen of soil,and growth characteristics and yield of wheat
摘要
Abstract
To determine the optimal combination of straw returning and nitrogen fertilizer in wheat(Triticum aestivum L.)cultivation within the rice-wheat rotation system of the Jianghan Plain,a field experiment was conducted using a split-plot design.Three straw re-turning treatments of no straw returning(NSR),half straw returning(HSR),and full straw returning(TSR)were tested.Four N fertil-ization levels of N0(0 kg/hm2),N1(90 kg/hm2),N2(180 kg/hm2),and N3(270 kg/hm2)were also applied.The effects of these treat-ments on soil carbon and nitrogen contents,population photosynthetic parameters,aboveground dry matter accumulation and yield of wheat were studied.The results showed that HSR and TSR combined with N2 and N3 could effectively increase soil organic carbon in 0～20 cm soil layer.HSR combined with N2 and N3 could increase soil total nitrogen content.HSR combined with N3 could increase soil nitrate nitrogen content in the wintering stage.TSR combined with N2 and N3 could increase soil ammonium nitrogen content in 0～10 cm soil layer from the flowering stage to the maturity stage.HSR+N3 treatment significantly increased the flag leaf relative chloro-phyll content and population leaf area index of wheat after booting,so that it had higher aboveground dry matter accumulation.Straw returning increased the proportion after anthesis,while the increase of nitrogen application rate increased the proportion of dry matter accumulation before anthesis.Straw returning combined with nitrogen fertilizer significantly affected wheat yield,and the yield of HSR+N3 treatment was the highest.In conclusion,in the Jianghan Plain's rice-wheat rotation system,half straw returning combined with 180～270 kg/hm2 of N fertilizer could maximize wheat yield and effectively improve soil nutrient content.关键词
秸秆还田/氮肥/土壤有机碳/土壤氮/小麦(Triticum aestivum L.)/生长特性/产量Key words
straw returning/nitrogen fertilizer/soil organic carbon/soil nitrogen/wheat(Triticum aestivum L.)/growth characteris-tics/yield分类
农业科技引用本文复制引用
李梦娟,晏宇航,李慕嵘,史丽丽,KEM SENOU PAVEL DARYL,王小燕..水稻秸秆还田配施氮肥对土壤碳氮及小麦生长特性和产量的影响[J].湖北农业科学,2025,64(5):33-41,55,10.基金项目
国家自然科学基金项目(31871578) （31871578）
湿地生态与农业利用教育部工程研究中心开放基金项目(KFT202104) （KFT202104）
