西藏高寒牧区燕麦作物系数的推求及验证  

Ascertainment and Verification of Crop Coefficient for Oat in Alpine Pasture of Tibet

作　　者：赵世昌[1] 徐冰[2] 魏占民[1] 郭克贞[2] 汤鹏程[2] 

机构地区：[1]内蒙古农业大学水利与土木建筑工程学院,呼和浩特010018 [2]中国水利水电科学研究院牧区水利科学研究所,呼和浩特010020

出　　处：《灌溉排水学报》2015年第2期56-60,共5页Journal of Irrigation and Drainage

基　　金：中国水科院科研专项基金项目(MK2010J03;MK2012J05)

摘　　要：运用FAO-56推荐的单作物系数法和双作物系数法推求充分灌溉条件下西藏高寒牧区燕麦的作物系数,并通过灌溉试验数据验证所求作物系数的可靠性以及这2种方法在海拔4 000m以上地区的适用性。结果表明,基于单作物系数法,2011年和2012年作物系数Kcini、Kcmid、Kcend分别为1.06、1.18、0.28和1.09、1.17、0.28。2011年和2012年双作物系数法与单作物系数法计算的ETc拟合相关系数分别为0.743和0.894。理论计算的作物需水量与实测值接近,该2种作物系数法均适用于西藏高寒牧区。The crop coefficient of oat was calculated through single crop coefficient approach and dual crop coefficient approach recommended by FAO-56 under sufficient irrigation in alpine pasture of Tibet.The reliability of the calculated crop coefficient and the applicability of the two methods were verfied according to the data of two years’ irrigation experiments in Dangxiong county of Tibet.Results suggested that Kcini,Kcmid,Kcendcomputed by single crop coefficient approach in 2011 and in 2012 were 1.06,1.18,0.28 and 1.09,1.17,0.28 respectively.The correlation coefficients between water requirements calculated by single crop coefficient approach and dual crop coefficient approach were 0.743 and 0.894 in 2011and in 2012 respectively.The theoretical calculated water requirements were close to the measured data,indicating that the two methods recommended by FAO-56 could be used to calculate the crop coefficient in the alpine pasture of Tibet.

关 键 词：西藏 高寒牧区 燕麦 作物系数 

分 类 号：S512.6[农业科学—作物学]