[1]杨长琴,张国伟,刘瑞显.种植密度与缩节胺(DPC)对麦后直播机采棉产量和品质的影响[J].江苏农业学报,2016,(06):1288-1293.[doi:doi:10.3969/j.issn.1000-4440.2016.06.015]
　YANG Chang-qin,ZHANG Guo-wei,LIU Rui-xian.Effects of planting density and dimethyl piperidinium chloride (DPC) on yields and fiber qualities of machine picked cotton after barley harvesting[J].,2016,(06):1288-1293.[doi:doi:10.3969/j.issn.1000-4440.2016.06.015]
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种植密度与缩节胺(DPC)对麦后直播机采棉产量和品质的影响()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2016年06期
页码:
1288-1293
栏目:
耕作栽培·资源环境
出版日期:
2017-02-07

文章信息/Info

Title:
Effects of planting density and dimethyl piperidinium chloride (DPC) on yields and fiber qualities of machine picked cotton after barley harvesting
作者:
杨长琴; 张国伟; 刘瑞显
（江苏省农业科学院经济作物研究所/农业部长江下游棉花与油菜重点实验室，江苏南京210014）
Author(s):
YANG Chang-qin; ZHANG Guo-wei; LIU Rui-xian
(Institute of Industrial Crops, Jiangsu Academy of Agricultural Sciences/Key Lab of Cotton and Rapeseed, Ministry of Agriculture, Nanjing 210014, China)
关键词:
麦后直播机采棉; 种植密度; 缩节胺; 生物量; 产量; 品质
Keywords:
machine picked cotton after barley harvesting; planting density; DPC; biomass; yield; fiber quality
分类号:
S562.01
DOI:
doi:10.3969/j.issn.1000-4440.2016.06.015
文献标志码:
A
摘要:
为探明麦后直播机采棉适宜的种植密度和化控水平，2013年以早熟棉(中棉所50)为材料，采用裂区设计，在江苏省盐城市大丰区和南京市研究种植密度（1 hm2 7.50×104株、1 hm2 9.75×104株和1 hm2 12.00×104株）和缩节胺（DPC）用量（0 g/hm2、52.5 g/hm2和105.0 g/hm2）对麦后直播棉产量、品质的影响。结果表明，密度1 hm2 9.75×104株和DPC用量 52.5 g/hm2、105.0 g/hm2处理叶面积指数高值持续期较长；生物量累积速率达到峰值的时间随密度增加而提前，吐絮期生物量以密度1 hm2 9.75×104株处理高于7.50×104株处理，而1 hm2 12.00×104株处理最低。在密度1 hm2 7.50×104株条件下，DPC处理降低生物量；密度1 hm2 9.75×104株和1 hm2 12.00×104株条件下DPC 52.5 g/hm2处理的生物量较高。大丰点产量以1 hm2 9.75×104株、DPC 52.5 g/hm2处理较高，南京点以相同密度下DPC 52.5~105.0 g/hm2处理较高；纤维长度和比强度以1 hm2 9.75×104株和1 hm2 12.00×104株、DPC 52.5~105.0 g/hm2处理较优。综上所述，麦后直播机采棉种植密度1 hm2 9.75×104株、DPC 用量52.5~105.0 g/hm2，有利于生物量累积和产量、品质形成。
Abstract:
The aim is to find out the appropriate density and chemical control level of machine picked cotton after barley harvesting. Using the early mature cotton (CCRI 50) as material, field experiments were carried out to evaluate the effects of planting density and dimethyl piperidinium chloride(DPC) on biomass, yield and fiber qualities of cotton in Nanjing and Dafeng, Jiangsu province of China in 2013. The main plots comprised three planting densities (1 hm2 7.50×104, 1 hm2 9.75×104 and 1 hm2 12.00×104 plants), while DPC application rates (0 g/hm2, 52.5 g/hm2 and 105.0 g/hm2) constituted the subplots. The results showed that the higher leaf area index (LAI) lasted from full-flowering to boll-opening in the treatments of 1 hm2 9.75×104 plants with DPC of 52.5-105.0 g/hm2. The time for peaking biomass accumulation rate advanced with the density increase and the final biomass of 1 hm2 9.75×104 plants treatment was the highest. The biomass decreased in the treatments of 1 hm2 7.50×104 plants with DPC of 52.5-105.0 g/hm2 and was higher in the treatments of 1 hm2 9.75×104 plants or 1 hm2 12.00×104 plants with DPC of 52.5 g/hm2. The higher yield was found at the density of 1 hm29.75×104 plants with DPC of 52.5 g/hm2 in Dafeng and at the same plant density with DPC of 52.5-105.0 g/hm2 in Nanjing. The higher values of the fiber length and strength showed up in the treatments of 1 hm2 9.75×104-12.00×104 plants with DPC regulation. In summary, the treatments of 1 hm2 9.75×104 plants with DPC of 52.5-105.0 g/hm2 for the machine picked cottons after barley harvesting were conducive to the biomass accumulation, yield and fiber quality.

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备注/Memo

备注/Memo:
收稿日期：2016-02-04 基金项目：江苏省三新工程项目[SXGC(2014)299]；江苏省科技支撑计划项目（BE2014389） 作者简介：杨长琴（1972-）,女，江苏仪征人，博士，副研究员，主要从事棉花栽培生理研究。（E-mail）ychq2003@qq.com 通讯作者：刘瑞显，（E-mail）liuruixian2008@163.com
更新日期/Last Update: 2017-02-07