摘要
为探明北疆地区膜下滴灌棉花生育期合理的水氮施量,通过田间小区,设计灌水量和施氮量2个因素(灌水量设4个水平,即W1:5250 m^3/hm^2、W2:4500 m^3/hm^2、W3:3750 m^3/hm^2和W4:3000 m^3/hm^2;施氮量设3个水平,即N1:300 kg/hm^2、N2:262.5 kg/hm^2和N3:225 kg/hm^2)试验,研究膜下滴灌棉花生育期不同水氮施量对棉花株高、茎粗、LAI、地上部干物质积累以及产量的影响效应。结果表明:灌水量对棉花生长具有显著的影响,棉花株高、茎粗、LAI和地上部干物质量均随着灌水量的增加而增加,且灌水量对棉花LAI和地上部干物质量的影响效应大于施氮量。当灌水量为3750 m^3/hm^2,施氮量为262.5 kg/hm^2时,棉花单株铃数、单铃质量以及产量达到最高,综合分析,该灌水量和施氮量为北疆地区膜下滴灌棉花生育期的最优水氮施量。
In order to explore the reasonable amount of water and nitrogen application in the growth period of cotton under mulch drip irrigation in North Xinjiang,two factors,namely irrigation quantity and nitrogen application rate,were designed through field plot.The irrigation water quantity was set at four levels,including W1:5250 m^3/hm^2,W2:4500 m^3/hm^2,W3:3750 m^3/hm^2 and W4:3000 m^3/hm^2;three levels of nitrogen application(N1:300 kg/hm^2,N2:262.5 kg/hm^2 and N3:225 kg/hm^2)were used to study the effects of different water and nitrogen levels on plant height,stem diameter and LAI,dry matter accumulation and yield of cotton during the growth period of drip irrigation under mulch.The results showed that the irrigation amount had a significant effect on the growth of cotton,and the plant height,stem diameter,LAI and overground dry matter mass of cotton all increased with the increase of irrigation amount,and the effect of irrigation amount on LAI and overground dry matter mass of cotton was greater than that of nitrogen application.When the irrigation amount was 3750 m^3/hm^2 and the nitrogen application amount was 262.5 kg/hm^2,the boll number,boll quality and yield of cotton per plant reached the highest.According to the comprehensive analysis,the irrigation amount of 3750 m^3/hm^2 and nitrogen application amount of 262.5 kg/hm^2 were the optimal water and nitrogen application amount for the growth period of cotton under mulch drip irrigation in Northern Xinjiang.
作者
忠智博
翟国亮
邓忠
蔡九茂
谷少委
王国栋
ZHONG Zhi-bo;ZHAI Guo-liang;DENG Zhong;CAI Jiu-mao;GU Shao-wei;WANG Guo-dong(Key Laboratory of Water-Saving Irrigation Engineering,Farmland Irrigation Research Institute,Chinese Academy of Agricultural Institute,Ministry of Agriculture and Rural Affairs,Xinxiang 453002,Henan,China;Graduate School of Chinese Academy of Agricultural Sciences,Beijing 100081,China;Institute of Water and Soil Fertilizer,Xinjiang Academy of Agricultural Reclamation Sciences,Shihezi 832000,Xinjiang,China)
出处
《节水灌溉》
北大核心
2019年第12期1-5,11,共6页
Water Saving Irrigation
基金
中国农业科学院基本科研业务费项目(Y2018PT72,Y2019LM15)
国家科技部经济作物水肥一体化技术模式研究与应用项目(2017YFD0201506)
关键词
膜下滴灌棉花
灌水量
施氮量
生长特性
产量
cotton under mulch drip irrigatio
irrigation amount
nitrogen rate
growth characteristics
yield
