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	滴灌模式和种植密度对棉花叶片衰老特性的影响
其他题名	Effect of Drip Irrigation Pattern and Planting Density on Leaf Senescence of Cotton
	马卉; 牛玉萍; 夏军; 陈宗奎; 罗宏海
来源期刊	新疆农业科学
ISSN	1001-4330
出版年	2017
卷号	54 期号:11 页码:1972-1982
中文摘要	【目的】研究不同滴灌模式下,种植密度对棉花产量形成期叶片衰老及物质生产的调节作用,为调控滴灌棉花早衰和提高棉花产量提供依据。【方法】选用新陆早45号为试验材料,设置常规滴灌(I_1 , 600 mm)和有限滴灌(I2 , 450 mm) ,每种滴灌模式下设低密度(D1 , 12 * 10~4株 / hm~2) 、中密度(D2 , 24 * 10~4株 / hm~2)和高密度(D3 , 36 * 10~4株 / hm~2) ,测定了棉花产量形成期叶面积指数(LAI) 、叶绿素含量、保护性酶活性及干物质量的动态变化。【结果】与常规滴灌处理相比,有限滴灌处理棉花LAI降低了17. 8%,但盛铃期叶绿素含量、超氧化物歧化酶(SOD)活性、过氧化物酶(POD)活性分别增加了8. 4%、44. 7%、12. 9%;两处理间干物质累积量无明显差异。随种植密度增加,LAI、干物质累积量及盛铃期可溶性蛋白(Pr) 、丙二醛(MDA) 、叶绿素含量均呈逐渐增加趋势。相关分析表明,SOD与LAI间呈极显著正相关(r = 0. 485) ,LAI与生殖器官干重和总干物质重均极显著正相关(r = 0. 721,r = 0. 859**) 。有限滴灌条件下,高密度处理通过增强盛铃期后叶片叶绿素含量、SOD活性、POD活性和Pr含量,延长LAI高值持续期,最终获得了较高群体总干物质和生殖器官累积量。【结论】有限滴灌条件下,增加种植密度可弥补水分亏缺对棉株生长的负面效应,有利于实现棉花节水高产。
英文摘要	【Objective】To explore the regulation of drip irrigation pattern and planting density on the cotton yield-forming stage of leaf senescence and dry matter production and provide evidence for regulation drip irrigation of cotton premature senescence and increase yield. 【Method】Used Xinluzao 45 as the experimental material,field experiments were conducted with two drip irrigation patterns (I_1 ,600 nm and I2 ,450 nm) and three levels of planting densities (D1 ,12 * 10~4 plant /hm~2 ; 24 * 10~4 plant /hm~2 ; 36 * 10~4 plant /hm~2) . The leaf area index,chlorophyll content,protective enzyme of cotton and dry matter accumulation were measured. 【Result】Compared with the conventional drip irrigation,limited drip irrigation treatment of leaf area index (LAI) decreased by 17. 8%,but superoxide dismutase activity (SOD) and peroxidase activity (POD) increased by 8. 4%,44. 7%,12. 9%,respectively. There was not significant difference between the two treatments in dry matter accumulation. With the increase of planting density,LAI,dry matter accumulation as well soluble protein (Pr) ,malondialdehyde (MDA) and chlorophyll content at full boll stage showed a trend of increase gradually. Correlation analysis showed that the SOD was very significant positive correlation between LAI and (r = 0. 485) ,LAI and reproductive organs dry and total dry matter were extremely significant positive correlation (r = 0. 721,r = 0. 721**) . Under limited drip irrigation condition,the high density treatment enhanced the leaves chlorophyll content,SOD activity,POD activity and Pr content after full boll stage,and extended LAI maximum duration,which finally achieved the highest total and reproductive dry matter accumulation.【Conclusion】Therefore,under the condition of limited drip irrigation a modest increase in planting density can be used as effective control measures to delay the cotton senescence and increase the production in arid areas.
中文关键词	棉花 ; 滴灌方式 ; 种植密度 ; 叶片衰老 ; 物质生产
英文关键词	cotton drip irrigation pattern planting density leaf senescence dry matter production
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRONOMY
WOS研究方向	Agriculture
CSCD记录号	CSCD:6143996
来源机构	石河子大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/236859
作者单位	石河子大学农学院, 新疆兵团绿洲生态农业重点实验室, 石河子, 新疆 832003, 中国
推荐引用方式 GB/T 7714	马卉,牛玉萍,夏军,等. 滴灌模式和种植密度对棉花叶片衰老特性的影响[J]. 石河子大学,2017,54(11):1972-1982.
APA	马卉,牛玉萍,夏军,陈宗奎,&罗宏海.(2017).滴灌模式和种植密度对棉花叶片衰老特性的影响.新疆农业科学,54(11),1972-1982.
MLA	马卉,et al."滴灌模式和种植密度对棉花叶片衰老特性的影响".新疆农业科学 54.11(2017):1972-1982.