摘要
本文系统总结了我国燕麦(Avena spp.)需水规律。不同地区燕麦需水量和需水强度存在较大差别;生产期影响燕麦需水量和需水强度;我国燕麦需水量和需水强度范围分别为280~570 mm和3.0~4.8 mm/d。我国主产区燕麦需水强度动态和生长发育阶段需水模数动态大体上呈先逐渐升高、后逐渐降低的单峰曲线。不同地区燕麦生长发育阶段干旱减产率及其模式差别巨大,需水关键期各不相同;从播种到收获,各个生长发育阶段都可能成为燕麦需水关键期。
Regularity of water demand of oats(Avena spp.)in China were systematically summarized in this paper.A relatively large differences of water requirement and water requirement rate of oats existed in different regions.Production period influenced oats water requirement.The extent of water requirement and water requirement rate of oats in China were from 280 to 570 mm and from 3.0 to 4.8 mm/d,respectively.The dynamic curves of water requirement rate and water demand modulus for oats were a single peak type.A huge differences of yield loss ratio by drought during different growth stage of oats existed in different regions,and the key stage of water demand was different for different regions,then every growth stage of oats could become th e key stage of water demand.
作者
孙洪仁
王显国
李茂娜
白春利
杜雪燕
李林霞
SUN Hong-ren;WANG Xian-guo;LI Mao-na;BAI Chun-li;DU Xue-yan;LI Lin-xia(College of Grassland Science and Technology,China Agricultural University,Beijing 100193;Institute of Grassland Research,Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences,Hohhot 010031;Qinghai Province Forage Technology Extension Station,Xining 810016)
出处
《中国奶牛》
2023年第8期61-65,共5页
China Dairy Cattle
基金
国家现代农业产业技术体系建设项目“现代牧草产业技术体系建设”(CARS-34)。
关键词
燕麦
饲草燕麦
籽实燕麦
需水量
需水强度
需水模数
需水关键期
Oats
Forage oats
Grain oats
Water requirement
Water requirement rate
Water demand modulus
Key stage of water demand
