欢迎访问《中国生态农业学报(中英文)》网站！

首页期刊简介征稿简则出版伦理优秀论文高被引文章虚拟专刊联系我们 English Version

引用本文:	张文颖,张恩和,景锐,黄高宝. 河西绿洲灌区春小麦留茬免耕的防风蚀效应研究[J]. 中国生态农业学报(中英文), 2009, 17(2): 244-249
	ZHANG Wen-Ying,ZHANG En-He,JING Rui,HUANG Gao-Bao. Effect of non-tillage with straw mulch on wind erosion in irrigated oases of Hexi Corridor[J]. Chinese Journal of Eco-Agriculture, 2009, 17(2): 244-249
DOI：	10.3724/SP.J.1011.2009.00244

【打印本页】【HTML】【下载PDF全文】【查看/发表评论】【下载PDF阅读器】【关闭】

←前一篇|后一篇→

过刊浏览高级检索

本文已被：浏览 1487次下载 1174次	码上扫一扫！
分享到：微信更多字体:加大+\|默认\|缩小-
河西绿洲灌区春小麦留茬免耕的防风蚀效应研究
张文颖^1,2, 张恩和³, 景锐³, 黄高宝³
1.甘肃农业大学农业生态工程研究所兰州 730070;2.湖北生态工程职业技术学院武汉 430200;3.甘肃农业大学农业生态工程研究所兰州 730070

摘要: 通过风洞模拟试验，对不同留茬高度（20 cm和40 cm）和不同留茬方式（立秆留茬和留茬收后压倒）下的土壤风蚀量和不同处理在25～250 mm内的风速廓线进行定量测定，并分析土壤风蚀速率与风速的关系。结果表明，高留茬免耕处理在吹蚀风速20 m·s^-1以下时对土壤的防风蚀作用存在显著影响。立秆留茬40 cm的风蚀速率比传统耕作降低87.84%，比相同留茬量的压倒留茬处理降低5.89%，表现为最小风蚀速率，且对吹蚀风速的减弱作用最强，防风蚀效果最好。进一步研究表明，传统耕作的土壤风蚀速率（Q）与风速(V)呈幂函数关系,而免耕处理的土壤风蚀速率（Q）与风速(V)遵循二次函数关系。

关键词: 春小麦风洞模拟免耕留茬方式留茬高度土壤风蚀速率风速廓线风蚀河西绿洲

中图分类号:

基金项目:国家科技支撑计划项目（2007BAD89B17）；国家高科技研究发展计划（863计划）项目（2002AA2Z4191）

Effect of non-tillage with straw mulch on wind erosion in irrigated oases of Hexi Corridor

ZHANG Wen-Ying^1,2, ZHANG En-He³, JING Rui³, HUANG Gao-Bao³

1. Institute of Agro-ecological Engineering, Gansu Agricultural University, Lanzhou 730070, China;2. Hubei College of Ecological Vocation, Wuhan 430200, China;3.Institute of Agro-ecological Engineering, Gansu Agricultural University, Lanzhou 730070, China

Abstract: A wind tunnel simulation experiment was performed to quantitatively determine soil wind erosion and wind profile in the 25 ~ 250 mm soil layer under two stubble heights (20 cm and 40 cm) and two stubble modes (stubble with stem and overpowered stubble after harvest). The relationship between soil erosion rate and wind velocity was analyzed. The results show that NS (no-tillage with high stubble at spring wheat harvest) treatment under wind velocity below 20 m·s^-1 significantly reduces soil wind erosion (P < 0.05). Compared with conventional tillage and NPS40 (leaving 40 cm stubble at spring wheat harvest), wind speed of NS40 (no-tillage with 40 cm stubble at spring wheat harvest) treatment decreases by 87.84% and 5.89%, respectively. This indicates that NS40 not only has the lowest wind erosion but the best effect on preventing wind erosion. A power function relation exists between wind erosion rate (Q）and wind velocity (V) under conventional tillage, while a quadratic function relation exists between Q and V under no-tillage treatment.

Keyword: Spring wheat, Wind tunnel simulation, Non-tillage, Stubble-keeping mode, Stubble height,Soil erosion rate, Wind profile, Wind erosion, Hexi oasis