旱作条件下刈割次数对三得利苜蓿主要经济性状的影响  

Effects of Cutting Frequency on Several Economic Characters of Suntory Alfalfa Under Dry Cropping Conditions

作　　者：王汝富 李智燕 李新媛 陈兴荣 闫永峰 张永辉 张万祥 王国生 贾勤学 任越 WANG Rufu;LI Zhiyan;LI Xinyuan;CHEN Xingrong;YAN Yongfeng;ZHANG Yonghui;ZHANG Wanxiang;WANG Guosheng;JIA Qinxue;REN Yue(Gansu Grassland Technology Extension Station,Lanzhou 730010,China;Longxi County Animal Husbandry and Veterinary Technical Service Center,Longxi 748100,China)

机构地区：[1]甘肃省草原技术推广总站,兰州730010 [2]陇西县畜牧兽医技术服务中心,陇西748100

出　　处：《中国草食动物科学》2021年第1期33-35,72,共4页China Herbivore Science

基　　金：甘肃农业新技术引进与示范项目(2017nykj)。

摘　　要：为获得甘肃中部地区旱作种植条件下合理的苜蓿收割制度参数,在陇西县文峰镇典型黄土高原丘陵山地,以秋眠级5级的三得利苜蓿为例,研究不同刈割次数与苜蓿产草量、鲜干比、茎叶比、越冬性能以及营养物质含量等几个主要经济性状的关系。结果表明:在保证苜蓿正常越冬的条件下,每年刈割4次和3次处理组比每年刈割2次的处理组产草量提高7.13%和7.35%(P<0.05)。综合考虑收割成本,每年以收割3次为宜。In order to obtain harvest parameters of alfalfa under aerobic planting conditions in central Gansu area,specially at hills of loess plateau in Zhongshan,Longxi county,the relationships of Suntory alfalfa with 5 grade were studied between mowing times with yield,fresh-to-dry ratio,stem-leaf ratio,overwintering performance,nutrient content and other major economic characteristics.The results showed that under the condition of normal overwinter,mowing 4 or 3 times a year had higher yield of 7.13%and7.35%(P<0.05)than mowing two times a year.If considering the harvest cost,it is recommended to harvest three times a year.

关 键 词：三得利苜蓿 刈割次数 经济性状 

分 类 号：S54[农业科学—作物学]