摘要
通过盆栽试验,于2013年研究了寒地黑土区玉米调亏灌溉条件下不同水分处理的耗水规律,结果表明:玉米不同生育阶段的总耗水量大小顺序为:拔节期>抽雄期>灌浆期>苗期,其中抽雄期的敏感指数(0.672 7)最高。当水分亏缺处理低于60%田间持水量时,将会影响玉米产量,产量和总耗水量之间呈二次抛物线关系,当灌水量为46.93kg/盆时,产量最高。利用玉米在不同亏水处理条件下的各生育阶段耗水量和产量数据,用Jensen模型进行拟合,得到适合该地区玉米的水分生产函数,为玉米在调亏灌溉条件下制定合理灌溉制度提供参考依据。
The pot experiments were conducted in 2013 for different water treatments under regulated irrigation, in which the water consumption rules were studied. The final results showed that the total water consumption depended on different growth stage, the order was.. elongation stage〉tasseling stage, filling stage＇seeding stage. The sensitivity index （0. 672 7） at tasseling stage was the highest. When the water deficit treatment was below 60% of field water, the maize yield would be reduced. The relationship between yield and total water consumption could be described with a quadratic parabola, when irrigation water was 46. 93 kg/pot, yield was the largest. Finally Jensen model was established. It can provide a scientific basis for establishing reasonable irrigation system of maize under the regulated deficit irrigatiork
出处
《中国农村水利水电》
北大核心
2014年第5期53-56,60,共5页
China Rural Water and Hydropower
基金
国家"十一五"科技支撑计划项目(2007BAD88b01)
东北农业大学博士基金项目
国家农业综合开发东北黑土区水土流失综合治理项目
关键词
寒地黑土区
玉米
JENSEN模型
调亏灌溉
水分生产函数
耗水规律
cold black soil region
maize
Jensen model
regulated deficit irrigation
water production function
water consumption rule
