QQ客服 官方微博 反馈留言

	Evaluation of methods of nutrient and water management on tea performance and nutrient loss in the Danjiangkou Reservoir area, China
	Liu R. H.; Kang, Y. H.; Wan, S. Q.; Pei, L.; Wang, J.; Wang, J.
	2016
关键词	Drip fertigation organic fertilizer water management total phosphorus loss total nitrogen loss drip fertigation inorganic fertilizers soil-phosphorus surface runoff catechu l. nitrogen irrigation yield quality nitrate
英文摘要	The long-term control of fertilizer pollution in the Danjiangkou Reservoir is an important task, and promoting good fertilizer pollution control methods is necessary to conserve water quality. A 3-year experiment was conducted to evaluate the fertilizer losses, economic benefits, and feasibility of different nutrient and water management methods in the area. The experiment included the following treatments: (1) local recommended fertilizer dose (450, 144, and 189 kg ha(-1) y(-1) of N, P2O5, and K2O) under rain-fed conditions (CK); (2) chicken manure at 7500 kg ha(-1) without drip irrigation (OF); (3) same dosage of treatment OF but with drip irrigation (OFD); and (4) drip fertigation with 30% of the fertilization dose of CK (DF). The results showed that organic fertilizer and drip fertigation treatments reduced total N (TN) and total P (TP) losses compared to CK due to considerably less amounts of N and P nutrient inputs. Total N runoff losses, and TN and TP concentrations in leaching water did not differ significantly among treatments OF, OFD, and DF. Net income among the CK, OF, and OFD treatments did not differ significantly. Treatment DF resulted in 19.5% and 13.8% more net income than CK and OFD, respectively. Such results provided guidance for promotion to maximize benefits and minimize environmental impacts.
出处	Archives of Agronomy and Soil Science
卷	62
期	8
页	1123-1135
收录类别	SCI
语种	英语
ISSN号	0365-0340
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/43268]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Liu R. H.,Kang, Y. H.,Wan, S. Q.,et al. Evaluation of methods of nutrient and water management on tea performance and nutrient loss in the Danjiangkou Reservoir area, China. 2016.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。