【摘要】 通过免耕和非免耕稻田中土壤物理化学特性和水稻根系生长发育特性的试验观测,研究了快速清茬免耕栽培的影响效果。结果表明:常年连作免耕有助于改善土壤的物理结构和增强土壤持水保肥能力;而且免耕田耕作层有机质、全N、全P、有效K、速效P、有效N含量均高于翻耕对照,但是Zn和全K低于对照。免耕栽培有利于水稻根系发育和在土壤中的分布,同时免耕大幅度提高水稻根系的吸收活力。更多还原

【Abstract】 Effects of no-tillage cultivation with quick cleaning-stubble on the properties of soil and growth of root systems of paddy rice were investigated.Results showed that continuous notillage cultivation helped to improve soil physical structure and the ability to maintain soil moisture and fertility.The contents of the organic matter,total N,total P,available N,available K and instant P in plough layer by no-tillage cultivation were higher than those in ploughing cultivation(CK),but Zn and total K were lower than CK.No-tillage cultivation improved the growth,development and distribution of rice root systems,and enhanced absorption activity of root systems as well.更多还原