摘要
针对黑土区存在的降雨量时空分布不均,水资源短缺,作物水分利用效率较低的实际问题。2013年在黑龙江省北安农垦分局红星农场进行了盆栽试验,研究了调亏灌溉条件下的大豆耗水规律。结果表明大豆各生育阶段耗水量按结荚-鼓粒、开花-结荚、鼓粒-成熟、分枝-开花、出苗-分枝、播种-出苗阶段依次递减;产量、水分利用效率与耗水量之间均呈二次抛物线关系。耗水量为62.5kg/盆时,水分利用效率先出现最大值,耗水量达84.76kg/盆时,产量(52.9g/盆)最高,最高值出现时间较水分利用效率偏后。在试验的基础上,建立了基于Jensen模型的黑土区大豆水分生产函数。研究结果可为黑土区大豆节水灌溉管理提供一定的理论依据。
Aiming at the problems of uneven distributions of rainfall both in temporal and spatial and the shortage of water resources , a potted experiment was conducted to study the laws of water consumption under the condition of regulated deficit irrigation for soy ‐bean in the Hongxing Farm of Heilongjiang Beian Land Reclamation Bureau in 2013 .The results showed that the descending order of water consumption in different growth stages of soybean was podding -drums tablets ,wering-podding ,seed illing-mature ,anching-flowing ,emergence - branching ,seeding-emergence ,and both yield and water use efficiency had a quadratic parabola relationship with water consumption .The water use efficiency reached the maximal value when the water consumption reached 62 .5 kg/pot ,and the highest production （52 .9 g/pot） appeared when the water consumption reached 84 .76 kg/pot .The time for the highest produc‐tion occurred later than that of water use efficiency .On the basis of the experiment ,a water production function model of soybean based on Jensen model in black soil region was established .The results could provide a theoretical foundation for soybean irrigation management in black soil region .
出处
《节水灌溉》
北大核心
2014年第11期29-33,共5页
Water Saving Irrigation
基金
国家科技支撑计划项目(2007BAD88b01
2014BAD12B01)
东北农业大学博士基金项目(2010RCB65)
东北农业大学科技创新团队计划项目(CXT003-2-3)
关键词
黑土区
大豆
耗水规律
调亏灌溉
水分利用效率
水分生产函数
Jensen
模型
black soil region
soybean
water consumption law
regulated deficit irrigation
water use efficiency
water productionfunction
Jensen model
作者简介
王龙（1990-），男，硕士研究生，研究方向为农业节水理论与技术研究。E—mail：nhlongwang@163．com。
通讯作者：魏永霞（1961-），女，教授，博士生导师，从事农业节水和水土保持理论与技术研究。E-mail：wyx0915@163．com。
