作物研究2023，Vol.37Issue(6)：577-581,5.
不同秸秆还田量对棉花生长发育和根际土壤的影响
Effects of Different Straw Returning Rates on Growth and Rhizosphere Soil of Cotton
李佳芮 1叶淑娟 1覃业玲 1周成轩 1朱方歌 1贺云新 2吴碧波 3周仲华1
作者信息
- 1. 湖南农业大学农学院,湖南 长沙 410128
- 2. 湖南省棉花科学研究所,湖南 常德 415101
- 3. 湖南生物机电职业技术学院,湖南 长沙 410127
- 折叠
摘要
Abstract
To explore the effects of returning cotton straws back to the field in different rates on the growth of cotton and the quality of rhizosphere soil,as well as to further clarify the possibilities in patterns of increasing productions of cotton from different returning methods,this research chose JX0010,a precocious variety of cotton,as the experimental material,con-ducting an indoor-experiment,where four groups were set up.Group CK was planted with no straw,while Group T1 was planted with one-third of its crushed straw,Group T2 being planted with two-third.Besides,Group T3 used all of its straw.The effects of different returning methods on the physiological and biochemical indicators of cotton seedling,as well as those on the physicochemical properties of rhizosphere soil and microbial community indicators in the soil,were mea-sured.The results showed that compared with Group CK,various physiological indicators of the cotton which were chloro-phyll content,root activity,peroxidase activity,and nitrate reductase activity in Group T1,T2 and T3 had increased signifi-cantly,while pH value and the content of Alkali hydrolyzed nitrogen and total nitrogen in the soil increased slightly.In ad-dition,as the quantity of straw increased,the organic matter content in the soil decreased at first,then increase,and re-de-crease at last.Furthermore,with the increase in straw content,the richness of Proteobacteria in the soil increased as well,while the amount of Actinomyces decreased.To sum up,methods in T2 and T3 can significantly improve the physiological and biochemical indicators of cotton,and that in T2 can significantly increase the soil organic matter content and the speci-ficity of soil community structure,improving the soil structure and fertility.关键词
棉花/秸秆还田/根际土壤/微生物群落Key words
cotton/returning traw to the field/rhizosphere soil/microbial community分类
农业科技引用本文复制引用
李佳芮,叶淑娟,覃业玲,周成轩,朱方歌,贺云新,吴碧波,周仲华..不同秸秆还田量对棉花生长发育和根际土壤的影响[J].作物研究,2023,37(6):577-581,5.
