摘要
作物要获得优质高产,不仅需要适宜的水肥条件还需要适宜的土壤结构。而土壤压实后容重升高导致土壤理化性状和土壤微生物种类及结构发生改变,影响土壤养分的有效性,造成多数土壤酶活性、土壤生物数量降低,使植物生长发育受阻、生物产量降低,进而影响作物的正常生长发育。本文综述了土壤压实胁迫形成的原因和其对土壤环境、作物的危害,及作物生理对土壤压实胁迫的响应机理等方面研究进展,并在此基础上对土壤压实胁迫下一步的研究方向进行了展望。
To gain good quality and high production of crops, it needs not only suitable water and fertilizer conditions but also suitable soil structure. The soil compaction causes bulk density increasing. Furthermore, it leads to the soil physical and chemical properties and soil microbial species and structure changing, including affecting the available nutrient contents, reducing the soil enzyme activities and the number of soil biota, hindering the plant growth and development and reducing the biological yield. Thus, it further influences the normal growth of crops. In the study, we reviewed the forming reason of soil compaction stress and its harmful effects on soil environment and crops,and also the response mechanism of crops to soil compaction;and then we prospected the next research direction of soil compaction stress.
引文
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