Key Components of Healthy Soils and Their Role in Crop Production
Key Components of Healthy Soils and Their Role in Crop Production
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健康土壤的关键成分及其在作物生产中的作用
DOI：
10.4148/2378-5977.1385
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
G. Hettiarachchi
中科院分区：
文献类型：
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作者：
C. Hsiao;G. Sassenrath;C. Rice;L. Zeglin;G. Hettiarachchi
土壤健康是一个令人困惑的术语，对不同的人有不同的含义。对作物生产者来说，健康的土壤对作物生长和产量至关重要。一些土壤性质包括土壤质地，如砂、粉和粘土的相对百分比；含水量；营养水平;有机碳含量；微生物群落；微生物活动。这些特性是土壤健康的决定因素。我们的研究证实，土壤管理的变化会影响表层土壤微生物的组成和活性。免耕土壤微生物量和丛枝菌根真菌（AMF）浓度越高，说明免耕土壤越健康。我们的研究还表明，地下土壤的微生物特性是由母质和风化决定的。
Soil health is a confusing term that means different things to different people. To a crop producer, healthy soils are critical for good crop growth and yield. Some soil properties include soil texture, such as the relative percentage of sand, silt and clay; the water content; nutrient levels; organic carbon content; the microbial community; and microbial activity. These properties are determinants of soil health. Our research confirmed that changes in soil management affect the composition and activity of soil microorganisms in surface soils. Greater concentrations of microbial biomass and arbuscular mycorrhizal fungus (AMF) in the no-till agricultural system indicated healthier soils in this system. Our research also indicated microbial properties in subsurface soils were determined by parent materials and weathering.