饲料研究2023，Vol.46Issue(23)：131-134,4.DOI:10.13557/j.cnki.issn1002-2813.2023.23.024
寒区紫花苜蓿晚播对根系性状及越冬性能的影响
Effect of late sowing on root traits and overwintering performance of alfalfa in cold regions
摘要
Abstract
In order to explore the latest sowing date of alfalfa in Qiqihar,Longmu 803 alfalfa was used as experimental material,to study the effect of alfalfa on emergence days,overwintering rate,root growth and grass yield by setting different late sowing periods.The results showed that the number of emergence days of alfalfa sown from July 8 to July 29 was the shortest,which was four days.The diameter of root neck,depth of root neck into soil,diameter of main root,length of main root,number of fibrous roots,number of branches and wintering rate of alfalfa all decreased with the delay of sowing date except T1 sown on July 1.The forage yield of alfalfa sown on July 8 was the highest,which was 11 302.79 kg/hm2 on July 8,and the yield of other treatments decreased with the sowing date.The study indicates that the latest sowing date for alfalfa to survive the winter in Qiqihar should be before July 22.关键词
紫花苜蓿/越冬率/根系特征/产草量/晚播期Key words
alfalfa/overwintering rate/root characteristic/forage yield/late sowing date分类
农业科技引用本文复制引用
李莎莎,杨曌,冯鹏,徐艳霞,王晓龙,柴华,吴玥..寒区紫花苜蓿晚播对根系性状及越冬性能的影响[J].饲料研究,2023,46(23):131-134,4.基金项目
黑龙江省农业科学院院级科研项目(项目编号:2020YYYF055) （项目编号:2020YYYF055）
黑龙江省省属科研院所科研业务费项目(项目编号:CZKYF2021-2-B025) （项目编号:CZKYF2021-2-B025）
黑龙江省饲草饲料产业技术协同创新推广体系 （）
黑龙江省自然科学基金资助项目(项目编号:LH2019C061) （项目编号:LH2019C061）
