农业工程学报2003，Vol.19Issue(5)：42-46,5.
不同自然植被管理措施对红壤丘陵果园水土流失的影响
Effects of different natural vegetation management measures on red soil erosion in hilly orchards
摘要
Abstract
The effect of managing the natural vegetation with different mechanical and chemical methods to minimize runoff and soil erosion in the red soil hilly orchards was investigated. The traditional tillage without herbicide practiced by farmers resulted in 33.2 m3/hm2 runoff and 167.8 t*km-2 soil loss per year. The management of natural vegetation with sequential herbicide treatments such as paraquat, glyphosate, G-G-P(glyphosate-glyphosate-paraquat), P-P-G (paraquat-paraquat-glyphosate) and sod culture reduced the surface runoff by 47.7%, 20.8%, 31.4% and 41.3%, 45.5%, respectively. The five treatments also reduced the soil loss by 52.4%, 39.0%, 48.1%, 50.7%, and 55.2%, respectively, and the nutrient loss through runoff by 50.2%, 37.0%, 41.8%, 45.8%, and 60.3%, respectively. Average soil covers by natural vegetation 30 days after application with paraquat, glyphosate, G-G-P, P-P-G and tillage without herbicide were 67.2%, 30.3%, 36.8%, 51.2% and 55.1%, respectively, as compared with the sod culture method. It showed that paraquat applications allow to maintain a higher vegetation cover resulting in lower soil erosion, which is a promising measure for soil-water and soil fertility preservation.关键词
植被管理/除草剂/水土流失/丘陵果园/红壤Key words
natural vegetation management/herbicides/water and soil loss/hilly orchard/red soil分类
农业科技引用本文复制引用
水建国,柳俊,廖根清,程岩兴,区越富,周权康,Allard Jean-louis..不同自然植被管理措施对红壤丘陵果园水土流失的影响[J].农业工程学报,2003,19(5):42-46,5.基金项目
This study was supported by Syngenta (China) Investment Co. Ltd., Swiss. （China）
