新疆农业大学学报2026，Vol.49Issue(2)：117-122,6.DOI:10.20088/j.cnki.jxau.2026.02.003
不同地膜残留量对棉花光合特性及生长发育的影响
Effects of Different Residual Plastic Film Amounts on Cotton Photosynthetic Characteristics and Growth and Development
摘要
Abstract
In order to investigate the effects of different residual plastic film on cotton growth,develop-ment,photosynthetic physiological characteristics and yield formation,a small-plot simulation experiment was conducted in the gray desert soil region of Xinjiang,using Xinluzao 53 as the test variety,with 6 plas-tic film residue gradients[0(control),250,500,1 000,1 500,2 000 kg/hm2].The results showed that,compared with the control,the net photosynthetic rate of cotton leaves was significantly reduced when the residual plastic film exceeded 500 kg/hm2(P<0.05),and the SPAD value was significantly reduced in the 1 500 kg/hm2 treatment(P<0.05).Light response characteristics indicated that,compared with the con-trol,the maximum net photosynthetic rate decreased by 28.98%in the 500 kg/hm2 treatment(P<0.05),and the net photosynthetic rate and light saturation point were significantly reduced(P<0.05).The light compensation point and dark respiration rate in the 250 kg/hm2 treatment were significantly higher than those in the control(P<0.05).The control group had the highest seed cotton yield(5 169.62 kg/hm2),while cotton yield was significantly reduced in all residual film treatments(P<0.05).Correlation analysis showed that plant height was significantly positively correlated with SPAD value(P<0.05),stomatal conductance was extremely significantly positively correlated with intercellular CO2 concentration(P<0.01),and yield was positively correlated with plant height,SPAD value,and maximum net photosynthetic rate.Residual plastic mulch affects plant growth by inhibiting the photosynthetic capacity of leaves,there-by leading to a decrease in yield.关键词
棉花/地膜残留量/光合特性/光合特性参数/产量Key words
cotton/residual plastic film/photosynthetic characteristics/photosynthetic characteristic pa-rameters/yield分类
农业科技引用本文复制引用
苗世贺,杨志莹,贾宏涛,孙霞..不同地膜残留量对棉花光合特性及生长发育的影响[J].新疆农业大学学报,2026,49(2):117-122,6.基金项目
新疆维吾尔自治区重点研发专项课题(2022B02017-1) （2022B02017-1）
