期刊论文

中文

安徽农业科学

0517-6611

2015

19

66-69

10.13989/j.cnki.0517-6611.2015.19.026

国家自然科学基金项目（31100382）； 湖南省科技支撑计划项目（2014RS4002）；

本校为第一机构

[目的]为了研究黑麦草草茬还田对酸化水稻土质量的影响。[方法]采用室内培养模拟酸雨淋溶条件的方法（p H分别为3.5、4.5和5.5,并以p H 6.5为对照）。[结果]在模拟酸雨环境下,水稻土中有机质、全氮、全磷和速效磷含量在黑麦草草茬还田后随p H的下降有不同程度增加,但增幅有限。然而,土壤活性有机碳、微生物量氮则呈现相反的变化趋势,微生物量碳、磷随酸雨p H先升高后减低。强酸（p H≤3.5）抑制了黑麦草草茬还田后水稻土壤中过氧化氢酶、脲酶、蛋白酶和酸性磷酸酶活性。[结论]酸雨能在短时间内加速黑麦草草茬分解腐烂和养分释放。

[Objective] The research aimed to study the effects of ryegrass straw returning to field on soil quality and the acidification of the rice. [Method] The indoor cultivation of simulated acid rain leaching conditions（ p H were 3. 5,4. 5 and 5. 5,and p H 6. 5 was as a control）was adopted. [Result]Under simulated acid rain environment,paddy soil organic matter,total nitrogen,total phosphorus and available phosphorus after the ryegrass straw returning to field with p H decline increased to some extent,but the increase was limited. However,active s...