摘要
于 1996 - 2 0 0 1年对平凉市区域自然气候条件下胡麻全生育期的需水量进行的研究结果表明 ,丰水年、平水年、干旱年份胡麻的需水量不同 ,多年胡麻平均需水量为 393.6 0 m m,胡麻产量为 2 0 83.5 kg/hm2 ,需水系数为 2 .83m m/kg,全生育期平均需水强度为 3.5 2 m m/d。并应用彭曼法计算确定了作物系数 KC,推算出平凉市7县 (区 )胡麻生育期需水量为崆峒区 4 6 6 .7m m、泾川县 4 90 .5 mm、灵台县 4 71.0 m m、崇信县 4 87.8mm、华亭县4 4 3.6 m m、静宁县 4 5 5 .2 mm、庄浪县 4 4 0 .9mm。
Water requirement of flux was studied in Pingliang from the year of 1996 to 2001.Results showed that water requirement amounts on flux averaged 393.6 mm that differs in normal and dry and wet years, mean yield of flux was 2 083.5 kg/hm^2 and water coefficient for producing 1 kg flux was 2.83 mm, and water requiring intensity for growing season was 3.52 mm/d^1 on average.Moreover,crop coefficient (Kc) was determined using Penman equation.Different countys’water requirement calculated with Kc values was 466.7 mm for Kongtong,490.5 mm for Jingchuan,471.0 mm for Lintai,487.8 mm for Chunxin,443.6 mm for Huating,455.2 mm for Jinning,and 440.9 mm for Zhuanglang.
出处
《甘肃农业科技》
2005年第3期13-15,共3页
Gansu Agricultural Science and Technology
关键词
胡麻
需水量
彭曼法
Fulx
Water Requirement
Penman Method
