Stover return and nitrogen application affect soil organic carbon and nitrogen in a double-season maize field
Stover return and nitrogen application affect soil organic carbon and nitrogen in a double-season maize field
复制标题
秸秆还田和施氮对双季玉米田土壤有机碳和氮的影响
DOI：
10.1111/plb.13370
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发表时间：
2021-12-05
期刊：
影响因子：
3.9
通讯作者：
Zhou, X. B.
中科院分区：
文献类型：
--
作者：
Liu, Y. X.;Pan, Y. Q.;Zhou, X. B.
栽培技术对玉米产量有重要影响。研究了秸秆还田和不同施氮量对土壤有机碳组成、土壤养分及玉米产量的影响。在秸秆还田和不秸秆还田的传统种植（TP）方式下，分别施氮100（N100）、150（N150）、200（N200）、250（N250）和300（N300）kg/ha。施氮量和秸秆还田影响土壤有机碳、活性有机碳、微生物量、硝态氮、铵态氮和玉米产量。土壤全氮、全碳含量和玉米产量均高于全磷。SR和TP的SOC含量分别为9.67和9.19 g kg（-1）。施氮量与土壤微生物量碳、速效氮、有机碳、硝态氮、铵态氮和产量呈显著正相关。土壤有机碳组成、土壤养分和玉米产量均在250 kg/hm ~（-1）时达到最大值。在亚热带地区，与传统种植相比，秸秆还田配合施氮250 kg ha（-1）显著提高了玉米的生长性状和产量。
Cultivation techniques have an important influence on grain yield of maize. This experiment investigated the effect of stover return (SR) and different nitrogen (N) application rate on soil organic carbon (SOC) composition, soil nutrient and maize yield. Different nitrogen application rate 100 (N100), 150 (N150), 200 (N200), 250 (N250) or 300 (N300) kg ha(-1) applied to the maize field with stover return and without stover return traditional planting (TP) method. Nitrogen application rate and stover return affected the SOC, labile organic carbon (LOC), microbial biomass (MBC), NO3--N, NH4+-N and maize yield. Soil N, soil carbon content and maize yield of SR were all higher than TP. The SOC content of SR and TP were 9.67 and 9.19 g kg(-1), respectively. Nitrogen application was significantly and positively correlated with soil MBC, LOC, SOC, NO3--N, NH4+-N and yield. The maximum values of SOC composition, soil nutrients and maize yield were reached at SR with 250 kg ha(-1). Stover return with application of N 250 kg ha(-1) significantly increased the growth attribute and maize yield in subtropical region compared with traditional planting.