干旱区生态环境知识资源中心(Arid): Conservation tillage improves the yield of summer maize by regulating soil water, photosynthesis and inferior kernel grain filling on the semiarid Loess Plateau, China

Arid

DOI	10.1002/jsfa.11571
	Conservation tillage improves the yield of summer maize by regulating soil water, photosynthesis and inferior kernel grain filling on the semiarid Loess Plateau, China
	Wang, Zhen; Sun, Jun; Du, Yadan; Niu, Wenquan
通讯作者	Niu, WQ (corresponding author), Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China.
来源期刊	JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
ISSN	0022-5142
EISSN	1097-0010
出版年	2021-10
英文摘要	BACKGROUND Poor inferior kernel grain filling is a challenge that limits summer maize yield. The effect and mechanism of conservation tillage on improving grain filling of inferior kernel in semi-arid rained areas remain uncertain and there has been little research on tillage management integrated with straw mulching to improve soil water content and photosynthesis in the Loess Plateau region. A 2 year (2019-2020) field experiment was established to study the impact of tillage practices on soil water content and summer maize root system morphology, photosynthetic capacity, inferior kernel grain filling, and grain yield. Treatments included reduced tillage (RT), no tillage (NT), and conventional tillage (CT). RESULTS Under RT and NT, the final 100-kernel weight and maximum and mean grain filling rates were higher than CT. Reduced tillage and NT increased soil water content at the jointing stage, silking stage and grain filling stage in comparison with CT. They increased root system morphology and dry matter accumulation, net photosynthetic rate, transpiration efficiency, and stomatal conductance in comparison with CT, and they also decreased intercellular CO2 concentration, and they increased chlorophyll content and above-ground dry matter accumulation in comparison with CT. Reduced tillage and NT increased evapotranspiration of maize, and ultimately, increased grain yield by 17% and 14%, respectively, in comparison with CT. CONCLUSION Conservation tillage could promote summer maize photosynthetic capacity and grain filling of inferior kernels by regulating soil water content and root system morphology. (c) 2021 Society of Chemical Industry.
英文关键词	conservation tillage grain filling soil water content photosynthesis inferior kernel
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000710492000001
WOS关键词	DRY-MATTER ACCUMULATION ; ZEA-MAYS L. ; WINTER-WHEAT ; CARBOHYDRATE-METABOLISM ; ENZYME-ACTIVITIES ; LEAF SENESCENCE ; USE EFFICIENCY ; ROOT-GROWTH ; DROUGHT ; SYSTEMS
WOS类目	Agriculture, Multidisciplinary ; Chemistry, Applied ; Food Science & Technology
WOS研究方向	Agriculture ; Chemistry ; Food Science & Technology
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/2XILL650/367616
作者单位	[Niu, Wenquan] Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China; [Wang, Zhen; Sun, Jun; Du, Yadan] Northwest A&F Univ, Coll Water Resources & Architectural Engn, Yangling 712100, Shaanxi, Peoples R China; [Niu, Wenquan] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wang, Zhen,Sun, Jun,Du, Yadan,et al. Conservation tillage improves the yield of summer maize by regulating soil water, photosynthesis and inferior kernel grain filling on the semiarid Loess Plateau, China[J]. 西北农林科技大学,2021.
APA	Wang, Zhen,Sun, Jun,Du, Yadan,&Niu, Wenquan.(2021).Conservation tillage improves the yield of summer maize by regulating soil water, photosynthesis and inferior kernel grain filling on the semiarid Loess Plateau, China.JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE.
MLA	Wang, Zhen,et al."Conservation tillage improves the yield of summer maize by regulating soil water, photosynthesis and inferior kernel grain filling on the semiarid Loess Plateau, China".JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE (2021).