不同灌溉方式对水稻需水量和生长的影响  

Effects of Different Irrigation Methods on Water Requirement and Growth in Paddy Rice

作　　者：张玉屏[1] 朱德峰[1] 林贤青[1] 陈惠哲[1] 张卫星[1] 

机构地区：[1]国家水稻生物学重点实验室中国水稻研究所

出　　处：《灌溉排水学报》2007年第2期83-85,共3页Journal of Irrigation and Drainage

基　　金：农业结构调整重大研究专项项目(2003-01-02A);农业跨越计划资助项目(01-01)

摘　　要：利用桶栽试验,研究了在不同灌溉方式及不同蒸发渗漏处理下的水稻需水量和对水稻生长的影响。结果表明:水稻以拔节孕穗期需水强度最高,无水层、干干湿湿和70%水分处理需水量分别比有水层处理减少42.5%、51.3%和57.6%;水稻叶面蒸腾量、棵间蒸发量与田间渗漏量占总耗水量的百分比分别为60.1%、16.4%和23.5%;干干湿湿处理水分利用率达到1.6 kg/m3,叶片光合速率最大,收获指数最高,从节水和增效的角度看,以干干湿湿灌溉最佳。The water requirement and growth in paddy rice were studied under four different irrigation methods and different evaporation and seepage with pot culture. The results showed that consumption intensity is the highest in all irrigation methods at hooting stage, Water consumption in all stages of paddy rice under no water layer irrigation, wet and dry cultivation and dry cultivation was respectively reduced 42.5%, 51.3% and 57.6% than that under continuous flooding irrigation; and the rate of transpiratio vaporation and seepage was 60.1% , 16.4%, 23.5%, respectively; water use efficiency of wet and cultivation was 1.6 kg/m^3 , photosynthetic rate and harvest index were the highest, It showed that wet dry cultivation was the best method of paddy from saving water and productive efficiency.

关 键 词：灌溉方式 水稻 需水量 渗漏 

分 类 号：S511[农业科学—作物学]