摘要
本文对我国燕麦(Avena spp.)水分利用效率影响因子研究结果进行了系统总结。燕麦水分利用效率影响因子包括降水量、降雨季节分配、地形、播种期、灌溉、施肥、混播、耕作方式、茬口、品种、刈割次数、耗水量和产量。施肥提高燕麦水分利用效率。多次刈割降低饲草燕麦水分利用效率。随着降水量、灌溉量和耗水量的逐渐增加,水分利用效率动态可能呈抛物线型,或直线上升+直线下降型,或直线上升+高平台+直线下降型。随着产量逐渐提高,水分利用效率呈直线或曲线上升。
The influence factors of water use efficiency(WUE)of oats(Avena spp.)in China were systematically summarized in this paper.The influence factors of WUE of oats were including precipitation,season distribution of rainfall,terrain,seeding time,irrigation,fertilization,mixed planting,farming methods,fore crop,variety,cutting frequency,water consumption and yield.Fertilization can increase WUE.Frequent cutting can reduce WUE.As the precipitation,irrigation amount and water consumption increasing,the dynamic model of WUE may be a parabola,or linear rising plus linear falling,or linear rising plus plateau plus linear falling.As the yield increasing,the WUE was linear or curve rising.
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2期59-66,共8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)。
