土壤紧实胁迫与植物抗胁迫响应机理研究进展

Advance in Research of effect and mechanism of higher soil compaction on plant growth

植物正常生长发育需要适宜的土壤容重,当容重偏高时会改变土壤物理、化学和生物性状,发生土壤紧实胁迫,影响土壤养分有效性,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。目前土壤紧实胁迫是制约我国农业可持续发展的因素之一,本文综述了土壤容重与土壤理化性质和土壤生物的关系、以及植物对土壤紧实胁迫的响应机理研究进展,并在此基础上展望了土壤紧实胁迫的进一步研究方向。

The plant needs suitable soil bulk density for the growth. The soil physical, chemical and biological properties deteriorated when the soil bulk density is higher than normal. At the same time the high soil compaction affects the available nutrient contents, the soil enzyme activities and the number of soil biota. The growth of plant will be inhibited. At present high soil compaction has become one of the principal obstacle factors for sustainable development of Chinese agriculture. In this article we have described the relation of soil bulk density and soil physical, chemical and biological properties, the response of plant to high soil compaction. The research prospect of soil comPaction is also discussed.