红壤旱地以玉米为主体的不同种植模式对土壤碳库管理指数的影响
作者:
作者单位:

江西农业大学生态科学研究中心,南昌 330045

作者简介:

郭树健,E-mail:1316248421@qq.com

通讯作者:

黄国勤,E-mail:hgqjxes@sina.com

中图分类号:

S344.1

基金项目:

国家重点研发计划项目(2016YFD0300208);国家自然科学基金项目(41661070);中国工程院咨询研究项目(2017-XY-28)


Effects of different planting patterns with maize as the main body on index of carbon pool management in red soil dryland
Author:
Affiliation:

Center for Ecological Science,Jiangxi Agricultural University,Nanchang 330045,China

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    摘要:

    为揭示红壤旱地种植模式对土壤有机碳库组分及碳库管理指数的影响差异,以有效反映种植模式与土壤质量的关系,以紫云英-玉米为对照(CK),设置马铃薯-玉米||大豆、“三花”混播(紫云英×油菜×肥田萝卜)-玉米||花生(TMP)、蚕豆-玉米||甘薯(BMS)、油菜-玉米||大豆(RMS)5种以玉米为主体的种植模式,分析了第1、2季收获后土壤有机碳及碳库管理指数的变化。结果显示:第2季间作玉米收获后,与CM处理(CK)相比,PMS、TMP、BMS、RMS的活性有机碳分别提高53.67%、67.89%、11.01%、57.80%;PMS、TMP、RMS处理的碳库活度、碳库活度指数与对照相比分别显著提高了52.63%~89.47%和53.49%~93.80%(P<0.05),土壤碳库管理指数显著高于对照59.24%、60.71%、80.91%(P<0.05)。土壤碳库管理指数与活性有机碳含量呈极显著正相关(P<0.01)。玉米间作产量均高于单作,且不同种植模式经济产量都高于对照。综合分析认为,红壤旱地以玉米为主体的不同种植模式有利于提高活性有机碳含量及碳素有效率、土壤碳库管理指数,也有利于提高玉米产量;马铃薯-玉米||大豆处理经济产量最高,三花-玉米||花生处理最有利于提高碳库管理指数,油菜-玉米||大豆处理次之。

    Abstract:

    The Chinese milk vetch - maize (CM) was used as the control (CK) and five maize based planting patterns including potato-maize || soybean (PMS),“three flowers(Chinese milk vetch× rapeseed × radish in fertilizer field)”mixed sowing-maize || peanut (TMP),broad bean-maize || sweet potato (BMS),rapeseed-maize || soybean (RMS) were set up in red soil dryland to study the effects of planting patterns on the organic carbon pool components,carbon pool management indices and quality in soil.The changes of the organic carbon and carbon pool management index in soil after harvest in the first and second seasons were analyzed.The results showed that the active organic carbon of PMS,TMP,BMS and RMS increased by 53.67%,67.89%,11.01% and 57.80% compared with the control.The activity and activity index of carbon pool of PMS,TMP and RMS were significantly (P<0.05) increased by 52.63%- 89.47% and 53.49% - 93.80%,respectively.The carbon pool management index in soil of PMS,TMP and RMS was significantly (P<0.05) higher than that of the control by 59.24%,60.71% and 80.91%.There was a significant positive correlation between the carbon pool management index and the content of active organic carbon in soil (P<0.01).The yield of maize intercropping was higher than that of monoculture.The economic yield under different planting patterns was higher than that of the control.The result of comprehensive analyses showed that the different planting patterns with maize as the main body in red soil dryland are conducive to improve the content of active organic carbon,the efficiency of carbon,the carbon pool management index in soil and the yield of maize.The economic yield under the PMS pattern was the highest.TMP pattern was most favorable to improve the carbon pool management index in soil,followed by the RMS pattern.

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郭树健,李淑娟,李娜,黄国勤.红壤旱地以玉米为主体的不同种植模式对土壤碳库管理指数的影响[J].华中农业大学学报,2022,41(6):128-136

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  • 收稿日期:2022-04-26
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  • 在线发布日期: 2022-12-09
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