干旱区生态环境知识资源中心(Arid): 水肥条件对煤矸石土壤上两种牧草光合及生物量的影响

Arid

	水肥条件对煤矸石土壤上两种牧草光合及生物量的影响
其他题名	Effects of Water and Fertilizer Conditions on Photosynthesis and Biomass of Two Forage Grasses in Coal Gangue Soil
	马戌; 王进鑫; 张玉玉; 胡杭丽
来源期刊	水土保持研究
ISSN	1005-3409
出版年	2021
卷号	28 期号:1 页码:1005-3409
中文摘要	西北干旱荒漠区煤矸石排放数量巨大,占用了大量土地且造成了多种污染,为了解决植被恢复面临的水分短缺、蒸发力强和养分贫瘠等困难,保证煤矸石山土壤上典型牧草能够正常存活和生长良好,试验采用二次通用旋转组合设计,测定了不同水肥条件下草木樨和蒙古冰草的光合及生物量并建立了水肥耦合回归模型,得到了煤矸石山植被恢复中2种牧草的最优水肥方案。结果表明:土壤水分对2种牧草的光合及生物量最敏感;磷肥对草木樨生长的贡献大于氮肥,氮肥对蒙古冰草生长的贡献大于磷肥;草木樨的光合及生物量均远大于蒙古冰草。西北煤矸石山植被恢复的草本植物首选草木樨,其最优水肥方案为土壤相对含水量68.44%~71.84%,施氮量82.09~102.92 kg/hm~2,施磷量139.92~192.58kg/hm~2。其次是蒙古冰草,其最优水肥方案为土壤相对含水量65.33%~71.11%,施氮量138.40~172.62 kg/hm~2,施磷量82.09~117.91kg/hm~2。试验结果为西北干旱荒漠区采煤迹地植被恢复提供了理论依据和实践指导。
英文摘要	Coal mining activities produce a huge amount of coal gangue and other solid wastes,which are deposited in piles and replace a large area of arable land into bare land.Moreover,these mining activities are more severe in the arid desert area of northwest China where scarcity of water and nutrients plays a significant role in the vegetation restoration.A quadratic general rotary combination design was adopted to examine the influence of different doses of water and fertilizers on the photosynthesis and biomass of Melilotus albus Desr.and Agropyron mongolicum Keng grown in coal mine spoils.Moreover,to identify a suitable water and fertilizer doses for vegetation restoration in the coal gangue area of northwest China.The experimental results showed that soil water was most important factor for the net photosynthesis rate and biomass production of the two forage grasses,and also demonstrated that the influence of phosphorus fertilizer on growth of Melilotus albus Desr.was higher than that of nitrogen fertilizer,whereas the influence of nitrogen fertilizer on growth of Agropyron mongolicum Keng was higher than that of phosphorus fertilizer.The net photosynthesis rate and biomass production of MelilotusalbusDesr.were greater higher than Agropyron mongolicum Keng,suggesting that planting Melilotus albus Desr.for revegetation purpose in the northwest coal gangue area with optimum water and fertilizer doses is the effective practice,which follows the pattern:soil relative water content 68.44%~71.84%,nitrogen application 82.09~102.92 kg/hm~2,phosphorus application 139.92 ~192.58kg/hm~2.In addition,vegetation with Agropyron mongolicum Keng using soil relative water content of 65.33%~71.11%,nitrogen application of 138.40~172.62 kg/hm~2,phosphorus application of 82.09~117.91kg/hm~2 can also be considered as a second option.
中文关键词	煤矸石 ; 净光合速率 ; 生物量 ; 水肥耦合 ; 植被恢复 ; 模型寻优
英文关键词	gangue field net photosynthetic rate biomass water-fertilizer coupling vegetation restoration model optimization
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:6945503
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/354451
作者单位	马戌, 西北农林科技大学水土保持研究所, 杨凌, 陕西 712100, 中国.; 张玉玉, 西北农林科技大学水土保持研究所, 杨凌, 陕西 712100, 中国.; 王进鑫, 西北农林科技大学资源环境学院, 杨凌, 陕西 712100, 中国.; 胡杭丽, 西北农林科技大学资源环境学院, 杨凌, 陕西 712100, 中国.
推荐引用方式 GB/T 7714	马戌,王进鑫,张玉玉,等. 水肥条件对煤矸石土壤上两种牧草光合及生物量的影响[J]. 西北农林科技大学,2021,28(1):1005-3409.
APA	马戌,王进鑫,张玉玉,&胡杭丽.(2021).水肥条件对煤矸石土壤上两种牧草光合及生物量的影响.水土保持研究,28(1),1005-3409.
MLA	马戌,et al."水肥条件对煤矸石土壤上两种牧草光合及生物量的影响".水土保持研究 28.1(2021):1005-3409.