摘要
以2009年内蒙古河套灌区春小麦套种玉米田间实测资料为基础,分别应用水量平衡原理与作物系数法得到套种作物生育各生育阶段实际腾发量;然后以作物-水模型为基本原理,采用多元线性回归方法对套种作物不同生育阶段水分敏感指标进行求解,其变化规律为:拔节-抽穗>分蘖-拔节>喇叭口-灌浆(玉米)>抽穗-灌浆(小麦)>苗期-分蘖,最后应用基于实数编码的遗传算法对小麦套玉米作物灌溉制度进行优化,结果表明,作物生育期内适宜的灌水量为450mm。
Based on the data measured on the spot of wheat intercropping corn in Hetao District in 2009, This paper gets each growth stage＇s actual evapotranspiration of interptanted crops according to the principle of water balance and the method of crop coefficient. Then the sensitive index to water based on the basic principle of crop- water is calculated according to the method of multiple linear regression equation in this paper. The results show that the diversification law of crop sensitive index to water is jointing--heading~ tiller^jointing^trumpet~ grouting） tasseling^grouting^seedling^tiller. Finally the irrigation system is optimizated according to the method of real-coded genetic algorithm and the results show that appropriate irrigation volume is 450 mm during the crop growing stage.
出处
《中国农村水利水电》
北大核心
2012年第3期18-22,26,共6页
China Rural Water and Hydropower
关键词
套种作物
作物腾发量
敏感指标
灌溉制度
intercropping crop
crop evapotranspiration
sensitive index
irrigation system
