干旱区生态环境知识资源中心(Arid): Boll characteristics and yield of cotton in relation to the canopy microclimate under varying plant densities in an arid area

Arid

DOI	10.7717/peerj.12111
	Boll characteristics and yield of cotton in relation to the canopy microclimate under varying plant densities in an arid area
	Zhang, Na; Tian, Liwen; Feng, Lu; Xu, Wenxiu; Li, Yabing; Xing, Fangfang; Fan, Zhengyi; Xiong, Shiwu; Tang, Jianghua; Li, Chunmei; Li, Ling; Ma, Yunzhen; Wang, Fang
通讯作者	Xu, WX (corresponding author), Xinjiang Agr Univ, Coll Agron, Engn Res Ctr Cotton, Minist Educ, Urumqi, Xinjiang, Peoples R China. ; Li, YB (corresponding author), Chinese Acad Agr Sci, State Key Lab Cotton Biol, Inst Cotton Res, Anyang, Henan, Peoples R China.
来源期刊	PEERJ
ISSN	2167-8359
出版年	2021
卷号	9
英文摘要	Planting density affects crop microclimate and intra-plant competition, playing an important role on yield formation and resource use, especially in areas where the cotton is grown at relatively high plant densities in Xinjiang, China. However, more studies are needed to examine how the change in planting density affects the microclimate factors such as the fraction of light intercepted (FLI), air temperature(T) and relative humidity (RH) within different canopy layers, which in turn affect the boll number per plant (BNF), boll number per unit area (BNA), boll weight (BW), and boll-setting rate (BSR) at fruiting branch (FB) positions FB1-3, FB4-6, and FB >= 7 in cotton. To quantify the relationships between boll characteristics, yield, and microclimate factors, we conducted a 2-year field experiment in 2019-2020 in Xinjiang with six plant densities: 9 (P1), 12 (P2), 15 (P3), 18 (P4), 21 (P5), and 24 (P6) plants m(-2). With each three plants m(-2) increase in density, the average FLI and RH across different canopy layers increased by 0.37 and 2.04%, respectively, whereas T decreased by 0.64 degrees C. The BNF at FB >= 7, FB4-6, and FB1-3 decreased by 0.82, 0.33, and 0.5, respectively. The highest BNA was observed in the upper and middle layers in the P4 treatment and in the lowest canopy layer with the P5. The highest BW was measured in the middle canopy layer for P3, and the highest BSR was measured in the lower layer for P3. Plant density exhibited linear or quadratic relationships with FLI, T, and RH. Microclimate factors mainly affected the boll number in each layer, but had no significant effects on the BW in any layer or the BSR in the middle and lower layers. Cotton yield was non-linearly related to plant density. The 2-year maximum yield was achieved at a plant density of 21 plants m(-2) , but the yield increase compared to the yield with a density of 18 plants m(-2) was only 0.28%. Thus, we suggest that the optimal plant density for drip-irrigated cotton in Xinjiang is 18 plants m(-2), which could help farmers grow machine-harvested cotton.
英文关键词	Yield-density relationship Boll distribution Plant density Fraction of light intercepted Canopy temperature and humidity
类型	Article
语种	英语
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000728787700002
WOS关键词	LIGHT INTERCEPTION ; RADIATION ; GROWTH ; CROP ; CULTIVATION ; TECHNOLOGY ; EFFICIENCY ; DYNAMICS ; XINJIANG
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/374106
作者单位	[Zhang, Na; Xu, Wenxiu; Tang, Jianghua; Li, Chunmei; Li, Ling; Ma, Yunzhen; Wang, Fang] Xinjiang Agr Univ, Coll Agron, Engn Res Ctr Cotton, Minist Educ, Urumqi, Xinjiang, Peoples R China; [Tian, Liwen] Xinjiang Agr Acad, Cash Crop Res Inst, Urumqi, Xinjiang, Peoples R China; [Feng, Lu; Li, Yabing; Xing, Fangfang; Fan, Zhengyi; Xiong, Shiwu] Chinese Acad Agr Sci, State Key Lab Cotton Biol, Inst Cotton Res, Anyang, Henan, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Na,Tian, Liwen,Feng, Lu,et al. Boll characteristics and yield of cotton in relation to the canopy microclimate under varying plant densities in an arid area[J],2021,9.
APA	Zhang, Na.,Tian, Liwen.,Feng, Lu.,Xu, Wenxiu.,Li, Yabing.,...&Wang, Fang.(2021).Boll characteristics and yield of cotton in relation to the canopy microclimate under varying plant densities in an arid area.PEERJ,9.
MLA	Zhang, Na,et al."Boll characteristics and yield of cotton in relation to the canopy microclimate under varying plant densities in an arid area".PEERJ 9(2021).