摘要
根据2001年甘肃民勤小坝口灌溉试验站自动气象站观测的气象资料,依据FAOPenman—Monteith公式计算出作物生育期内参考作物蒸发蒸腾量,结合实测的充分供水条件下作物耗水量,对膜下滴灌条件下大田作物的需水规律和作物系数进行了研究。确定了该地区膜下滴灌棉花和玉米各个生育阶段的作物系数,并建立了作物系数和有效积温及播种后天数的函数关系。该结果为该沙漠绿洲灌区膜下滴灌条件下棉花、玉米的水分管理提供了科学依据。
Experiments were conducted to measure water consumption of drip-irrigated cotton and corn under mulch at Xiao Ba Kou Irrigation Experimental Station of Minqin County in 2001. Based on the measured crop water consumption under the condition of sufficient water supply, the water requirements of crop and crop coefficients in the field with drip-irrigation under mulch were investigated. Monthly crop coefficients of drip-irrigated cotton and corn under mulch by FAO Penman-Montieth ET estimation method were determined. The results of this study provide crop coefficients for irrigation scheduling of drip-irrigated cotton and corn under mulch in arid regions.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2004年第5期97-100,共4页
Transactions of the Chinese Society of Agricultural Engineering
基金
国家高技术研究发展计划项目(2002AA2Z4031)
烟台师范学院中青年自然科学基金项目(000444)的一部分
关键词
膜下滴灌
棉花
玉米
需水规律
作物系数
drip-irrigated under mulch
cotton
corn
water requirements
crop coefficients
