基于土壤水势的灌溉对水稻生长和产量的影响  

Effects of Different Irrigation Based on Soil Water Potential on Growth and Yield of Rice

作　　者：陈宇眺[1] 周欢[1] 熊昊[1] 柯传勇[1] 原保忠[1] 潘圣刚[1] 

机构地区：[1]华中农业大学植物科学技术学院,武汉430070

出　　处：《灌溉排水学报》2009年第5期82-85,共4页Journal of Irrigation and Drainage

基　　金：教育部留学回国科研启动项目(4002-082019);华中农业大学科研启动项目(52204-05010);华中农业大学大学生科技创新基金资助项目(A07001)

摘　　要：以杂交水稻两优培九为试验材料,依据土壤15 cm深处的土壤水势,设定灌水下限依次为-10-、30、-50-、70 kPa 4种灌水处理,并以常规淹灌为对照,研究在不同灌水处理对水稻生长特性、产量及品质的影响。结果表明,与常规淹灌相比,4种灌水处理对水稻的生长特性和产量性状都得到了不同程度的促进。综合2年的数据,可以得出土壤水势值为-3 0 kPa时各项指标均表现良好,生长和产量情况较为稳定,是一种较为理想的灌溉模式。With hybrid rice cultivars ＂Liangyou Peijiu＂ as experimental materials, using tensiometer to determine the soil water potential 15 cm under soil surface, four treatments T1, T2, T3, T4 were set up for soil potential -10, -30, -50, -70 kPa, and CK was the continuous flood irrigation. Observing the growth and yield of rice under the different irrigation treatments, it was found that compared with continuous flood irrigation, the intermittent irrigation based on tensiometer can promote the rice to grow and get higher yield, and the irrigation water use efficiency of rice is also improved greatly under intermittent irrigation. The result showed that the soil potential about -30 kPa is the better lower limit value for rice irrigation, and it is also an easy method to guide the rice irrigation in the central China.

关 键 词：水稻 土壤水势 土壤水分张力计 产量 灌溉水分利用效率 

分 类 号：S511[农业科学—作物学]