EFFECTS OF NITROGEN APPLICATION ON BIOMASS ACCUMULATION, REMOBILIZATION, AND SOIL WATER CONTENTS IN A RAINFED WHEAT FIELD

doi:10.17557/tjfc.45522

	EFFECTS OF NITROGEN APPLICATION ON BIOMASS ACCUMULATION, REMOBILIZATION, AND SOIL WATER CONTENTS IN A RAINFED WHEAT FIELD
	Duan, Wenxue 1; Yu, Zhenwen ; Zhang, Yongli ; Wang, Dong ; Shi, Yu ; Xu, Zhenzhu2
	2014
发表期刊	TURKISH JOURNAL OF FIELD CROPS
ISSN	1301-1111
卷号	19 期号:1 页码:25-34
摘要	This study examined the effects of different levels of N fertilization on dry matter accumulation and remobilization, and soil water contents in a rainfed winter wheat field. The experiments were carried out during growth seasons in 2009 2012 in a hilly region in Shandong Province, China. The N rates applied were 0 (N0, the control), 90 (N1), 120 (N2), 150 (N3), 180 (N4), and 210 (N5) kg N ha(-1). Our results showed that N fertilization significantly increased dry matter accumulation and post-anthesis assimilates compared with controls. At anthesis, total above-ground biomass increased significantly with increasing N rate up to 150 kg ha(-1) and then leveled off in the 2009 2010 and 2011 2012 growth seasons. However, the biomass in the 2010 - 2011 growth season did not vary with different N rates. At maturity, the accumulation of dry matter in vegetative organs significantly increased with increasing N rate up to 150 kg ha(-1) and then leveled off in all growth seasons. Of all the treatments, N3 and N4 had relatively higher total above-ground biomass at maturity. In contrast, dry matter remobilization efficiency showed a declining trend under increasing N rate. The higher post-anthesis assimilates and the contribution of pre-anthesis assimilates to grains were obtained at N rates of 150 and 180 kg ha(-1) in all growth seasons. Soil water contents in 0 - 120, 0 - 100, and 40 - 160 cm soil layers during each growth season decreased significantly with increasing N rate up to 150 kg ha(-1). The maximum grain yields were obtained under N rate of 150 kg ha(-1) in all growth seasons, with the highest grain yield being 7160.8 kg ha(-1) in the 2011 - 2012 growth season. Our results suggested that N fertilization at 150 kg N ha(-1) was optimal for grain production via promoting above-ground biomass and soil water consumption in deep soil layers. These results should help provide guidance for N fertilization management for optimal and sustainable wheat production in the said region.
关键词	Dry matter accumulation dry matter remobilization grain yield N application rate rainfed winter wheat soil water content
学科领域	Agronomy
DOI	10.17557/tjfc.45522
收录类别	SCI
语种	英语
WOS关键词	DRY-MATTER ; GRAIN-YIELD ; USE EFFICIENCY ; WINTER-WHEAT ; DURUM-WHEAT ; MEDITERRANEAN ENVIRONMENT ; FERTILIZER APPLICATION ; SPRING WHEAT ; IRRIGATION ; DEFICIT
WOS研究方向	Agriculture
WOS记录号	WOS:000336774300005
出版者	SOC FIELD CROP SCI
文献子类	Article
出版地	BORNOVA
资助机构	National Natural Science Foundation of China [31171498] ; Technology System in Modern Wheat Industry, Chinese Ministry of Agriculture [CARS-3-1-19]
作者邮箱	zhangyl2012sdau@163.com
作品OA属性	Green Submitted
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/27145
专题	植被与环境变化国家重点实验室
作者单位	1.Shandong Agr Univ, Minist Agr, Key Lab Crop Ecophysiol & Cultivat, Tai An, Shandong, Peoples R China 2.Shandong Acad Agr Sci, Crop Res Inst, Jinan, Peoples R China 3.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Duan, Wenxue,Yu, Zhenwen,Zhang, Yongli,et al. EFFECTS OF NITROGEN APPLICATION ON BIOMASS ACCUMULATION, REMOBILIZATION, AND SOIL WATER CONTENTS IN A RAINFED WHEAT FIELD[J]. TURKISH JOURNAL OF FIELD CROPS,2014,19(1):25-34.
APA	Duan, Wenxue,Yu, Zhenwen,Zhang, Yongli,Wang, Dong,Shi, Yu,&Xu, Zhenzhu.(2014).EFFECTS OF NITROGEN APPLICATION ON BIOMASS ACCUMULATION, REMOBILIZATION, AND SOIL WATER CONTENTS IN A RAINFED WHEAT FIELD.TURKISH JOURNAL OF FIELD CROPS,19(1),25-34.
MLA	Duan, Wenxue,et al."EFFECTS OF NITROGEN APPLICATION ON BIOMASS ACCUMULATION, REMOBILIZATION, AND SOIL WATER CONTENTS IN A RAINFED WHEAT FIELD".TURKISH JOURNAL OF FIELD CROPS 19.1(2014):25-34.

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