地膜覆盖和施氮量对旱作春玉米农田净温室效应的影响

doi:10.13287/j.1001-9332.201804.028

应用生态学报 ›› 2018, Vol. 29 ›› Issue (4): 1197-1204.doi: 10.13287/j.1001-9332.201804.028

地膜覆盖和施氮量对旱作春玉米农田净温室效应的影响

刘建粲¹, 王泽林¹, 岳善超^1,2, 李世清^1,2*

¹西北农林科技大学资源环境学院, 陕西杨凌 712100;
²西北农林科技大学黄土高原土壤侵蚀与旱地农业国家重点实验室, 陕西杨凌 712100;

收稿日期:2017-08-09 出版日期:2018-04-18 发布日期:2018-04-18
通讯作者: * E-mail: sqli@ms.iswc.ac.cn
作者简介:刘建粲,男,1991年生,硕士研究生.主要从事土壤温室气体研究. E-mail: liujeechan@163.com
基金资助:
本文由国家自然科学基金项目(41401343)和中央高校基本科研业务费专项资金(2452015093,2452015473)资助

Effects of plastic film mulching and nitrogen application rate on net global warming potential in semiarid rain-fed maize cropland

LIU Jian-can¹, WANG Ze-lin¹, YUE Shan-chao^1,2, LI Shi-qing^1,2*

¹College of Resources and Environment, Northwest A&F University, Yangling 712100, Shaanxi, China;
²State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling 712100, Shaanxi, China;

Received:2017-08-09 Online:2018-04-18 Published:2018-04-18
Contact: * E-mail: sqli@ms.iswc.ac.cn
Supported by:
This work was supported by the National Natural Science Foundation of China (41401343) and the Fundamental Research Funds for the Central Universities (2452015093, 2452015473).

摘要/Abstract

摘要： 以旱作雨养条件下的春玉米为试验对象,在长武黄土高原农业生态试验站进行田间试验,研究了地膜覆盖和施氮量对农田净温室效应和温室气体排放强度的影响.结果表明: 采用地膜覆盖与增加施氮量都会影响净温室效应与温室气体排放强度,地膜覆盖条件下(FM),不同施氮量的春玉米产量为1643～16699 kg·hm^-2,净温室效应(CO₂当量,下同)为595～4376 kg·hm^-2·a^-1,温室气体排放强度为213～358 kg·t^-1;无覆膜条件下(UM),不同施氮量的春玉米产量为956～8821 kg·hm^-2,净温室效应为342～4004 kg·hm^-2·a^-1,温室气体排放强度为204～520 kg·t^-1.研究表明,对于旱作春玉米农田系统,地膜覆盖可以有效降低温室气体排放强度,增加作物产量,地膜覆盖下施氮250 kg·hm^-2可以实现高产与降低环境代价的双赢.

Abstract: A one-year field experiment was conducted to evaluate the effects of plastic film mulching (FM) and nitrogen application rates applied to rain-fed maize fields on net global warming potential (Net GWP) and greenhouse gas intensity (GHGI) at the Changwu Agricultural and Ecological Experimental Station. Both GWP and GHGI were affected by the plastic film mulching and nitrogen application rate. Under the FM treatment, maize yield ranged from 1643 to 16699 kg·hm^-2, the net GWP (CO₂-eq) ranged from 595 to 4376 kg·hm^-2·a^-1, and the GHGI (CO₂-eq) ranged from 213 to 358 kg·t^-1. The grain yield of maize, net GWP and GHGI for the UM (no mulching) treatment were 956 to 8821 kg·hm^-2, 342 to 4004kg·hm^-2·a^-1and 204 to 520 kg·t^-1, respectively. The results suggested that plastic film mulching could simultaneously improve grain yield and decrease GHGI in rain-fed cropland along with nitrogen fertilizer of 250 kg·hm^-2.

刘建粲, 王泽林, 岳善超, 李世清. 地膜覆盖和施氮量对旱作春玉米农田净温室效应的影响[J]. 应用生态学报, 2018, 29(4): 1197-1204.

LIU Jian-can, WANG Ze-lin, YUE Shan-chao, LI Shi-qing. Effects of plastic film mulching and nitrogen application rate on net global warming potential in semiarid rain-fed maize cropland[J]. Chinese Journal of Applied Ecology, 2018, 29(4): 1197-1204.

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地膜覆盖和施氮量对旱作春玉米农田净温室效应的影响

Effects of plastic film mulching and nitrogen application rate on net global warming potential in semiarid rain-fed maize cropland

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