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通过优化大米-小麦作物系统的种植模式来平衡谷物产量和环境性能

Ming Li¹, Chaosu Li², Miao Liu²

¹Crop Research Institute of Sichuan Academy of Agricultural Sciences/Environment-friendly Crop Germplasm Innovation and Genetic Improvement Key Laboratory of Sichuan Province, 610066 Chengdu, China.

The Science of the total environment

|October 18, 2023

概括

可持续的米小麦农业需要优化种植模式. 零耕作 (ZT) 与特定实践相结合,可以显著提高谷物产量,改善环境性能,减少碳足迹.

科学领域:

农业科学农业科学
环境科学环境科学
农业学是一种农业学.

背景情况:

传统的米-小麦作物系统面临着可持续性挑战.
优化种植模式对于提高产量和环境结果至关重要.

研究的目的:

评估六种不同的种植模式 (PPs) 对其对三个周期 (2019-2022) 的谷物产量和环境性能的影响.
确定米-小麦作物系统的可持续实践.

主要方法:

实验六种种植模式:旋转耕作 (RT) 有或没有施肥/草返回,小麦零耕作 (ZT).
评估谷物产量,温室气体排放 (甲,氧化),土壤有机碳 (SOC) 变化,出水和氨气挥发.
采用Z分数分析来确定综合性绩效分数.

主要成果:

涉及受精,吸管回收和/或ZT的PP与PP1 (无受精/吸管回收) 相比,平均总产量显著增加51-69%.
PP4和PP6显示每单位面积的碳足迹减少 (CF_A),而PP1和PP2具有最高的CF_A.
尽管氨的挥发性较高,但PP4的整体性能表现最好,谷物产量增加,SOC积累稳定,损失减少.

结论:

零耕作 (ZT) 播种技术,特别是在PP4 (小麦的ZT,米的RT和肥和草回收) 中,为可持续的米小麦种植提供了一个有希望的方法.
优化种植模式可以提高农业生产率,同时减轻温室气体排放和气损失等环境影响.

关键词:

我们的碳足迹农作物产量农作物产量农作物产量气足迹气足迹气足迹种植模式种植模式米小麦作物种植系统

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