期刊论文

Effect of No-till Farming on Soil Structure in Rice-rapeseed Rotation System

Lichu, Y.

中文

土壤学报

0564-3929

2021

58

02

412-420

10.11766/trxb201911110460

* 国家自然科学基金项目（41877022、41807008）和国家重点研发计划项目（2016YFD0300900）资助 Supported by the National Natural Science Foundation of China（Nos. 41877022 and 41807008）and the National Key Research and Development Program of China（No. 2016YFD0300900）

本校为第一机构

为探明免耕对稻油轮作系统土壤结构的影响,基于湖南省洞庭湖区4a的耕作试验(2016—2019),采用X射线CT扫描技术和常规土壤物理分析方法,研究了旋耕和免耕对水稻土0~25 cm土层土壤结构的影响。与旋耕相比,免耕处理对0~5 cm土层的土壤容重和土壤有机碳无显著影响,但免耕处理显著提高了0~10 cm土层>2 mm团聚体的含量和团聚体稳定性。不同耕作方式改变了土壤大孔隙度和孔隙大小分布,与旋耕处理相比,免耕处理增加了0~5和5~10 cm土层各个孔径范围内(>25 μm)的大孔隙度,其中0~5 cm土层300~500 μm孔径的大孔隙显著增加了70.5%,5~10 cm土层25~300和300~500 μm孔径的大孔隙分别增加了82.8%和167.2%(P

Objective Soil structure is an important factor affecting movement of water, gas and nutrients, root growth, and soil biological activities in the soil. Reasonable tillage is an important farming practice to create soil structure favorable to crop growth. No-Tillage has already demonstrated to improve soil structure and soil biodiversity in upland fields. However, so far fewstudies have reported effect of no-Tillage on soil structure of paddy fields. This study was conducted to explore effects of no-Tillage on the structure of a paddy soil in a...