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《Acta Agrestia Sinica》 2017-04
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Effect of the Last Harvest Time on Over-winter Rate and Root Nutrient Content of Alfalfa in Horqin Sandy Land

WANG Wei-dong;DENG Bo;WANG Xian-guo;GAO Kai;ZHU Guo-li;Inner Mongolia University for Nationalities;College of Animal Science and Technology,China Agricultural University;  
Second-year alfalfa grown in Horqin sandy land was cut at different time for the final harvest in this study.The root total nitrogen,soluble sugar,starch,and the following year green-up rate were measured.The results showed that:with the delay of the cutting time alfalfa winter survival rate decreased first and then increased,while alfalfa root total nitrogen and soluble sugar content decreased continuously.And root starch content exhibited an " up-down-up" trend.Last cutting on August 23 had significantly higher winter survival rate,root total nitrogen and soluble sugar content than other cutting time treatments(P0.05).
【Fund】: 重点牧区草原“生产生态生活”配套保障技术集成与示范(2012BAD13B00);; 通辽市与内蒙古民族大学科技合作项目(SXYB2012080);; 科尔沁沙地苜蓿高效种植技术研究与示范(201403048-2)资助
【CateGory Index】: S541.9
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