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通过动态优化土壤状态的方法,可以将中国的肥使用量减少一半

Haiqing Gong¹, Yulong Yin¹, Zhong Chen¹

¹State Key Laboratory of Nutrient Use and Management, College of Resources and Environmental Sciences, National Academy of Agriculture Green Development, China Agricultural University, 100193, Beijing, PR China.

Nature communications

|January 24, 2025

概括

可持续的管理对农业和环境至关重要. 一种新的动态优化土壤P状态 (DOP) 方法可以将肥使用量减少47.4%,而不会影响作物产量.

科学领域:

农业科学农业科学
环境科学环境科学
土壤科学土壤科学

背景情况:

可持续的 (P) 管理对于作物生产,环境保护和保存岩储量至关重要.
由于高成本和复杂的土壤采样,小型农民面临采用可持续实践的挑战.
现有的方法通常需要频繁地土测试,这阻碍了广泛采用.

研究的目的:

引入和评估一个动态优化土壤P状态 (DOP) 方法来管理长期的土壤P.
为了确定最佳的P应用率,而不需要频繁的土壤测试.
评估DOP方法在谷物作物生产中被广泛采用的潜力.

主要方法:

土壤P状态的动态优化 (DOP) 方法是为了在农业和环境值内管理土壤P而开发的.
通过在中国各地对小麦,大米和玉米进行35,575次农场试验,评估了DOP方法.
未来的土壤P状态和P肥料投入在全国范围内使用DOP方法进行了估计.

主要成果:

在广泛的农场试验中,DOP方法被发现是农业学上可以接受的.
与目前的做法相比,DOP方法证明了将P肥料使用量减少47.4%的潜力.
在实施DOP方法时没有观察到收益率处罚,这表明其有效性.

结论:

DOP方法提供了一种精确有效的方法来管理土壤的P状态并优化肥料的应用.
这种方法可以显著减少P肥料投入,解决环境问题和资源枯竭问题.
DOP方法提出了一个可行的战略,以加强全球P管理,确保粮食安全和环境可持续性.

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