摘要
【目的】探究阿鲁科尔沁旗夏播紫花苜蓿播期与当年刈割时间对紫花苜蓿生长、产量和越冬率的影响,为阿鲁科尔沁旗紫花苜蓿的大规模种植提供技术指导.【方法】选择紫花苜蓿品种‘雪豹’,于2016~2017年研究夏播时间(7月2日、7月12日、7月24日、7月29日、8月2日、8月10日)与当年刈割时间(9月4日、9月11日、9月18日、9月26日、10月11日、11月2日)对紫花苜蓿生长、产量和越冬率的影响.【结果】未刈割处理,7月份播种苜蓿的越冬率极显著高于8月2日和8月10日(P<0.01).7月初播种同时在9月初刈割,越冬率和翌年头茬产量与未刈割相比差异不显著(P>0.05);7月2日播种苜蓿各刈割处理与未刈割处理越冬率差异不显著(P>0.01),7月12日~7月29日播种的苜蓿各刈割处理越冬率均低于未刈割处理.【结论】在阿鲁科尔沁旗紫花苜蓿夏播时间最佳播期为7月2日~7月24日;7月2日播种的苜蓿适宜在9月初刈割,7月12日以后播种苜蓿当年不宜进行刈割.
【Objective】To explore the effects of summer sowing date and mowing time on growth,yield and winter survival rate of alfalfa in Aluke′rqin Banner,and to provide technical guidance for large-scale planting of alfalfa.【Method】The effects of summer sowing date(July 2nd,July 12th,July 24th,July 29th,August 2nd,August 10th)and mowing time(September 4th,September 11th,September 18th,September 26th,October 1th,November 2nd)on growth,yield and winter survival rate of alfalfa with Medicago sativa‘Calypso’were studied in 2016~2017.【Result】The winter survival rate of alfalfa planted in July without mowing was significantly higher than that on August 2nd and August 10th(P<0.01).Sowing at the beginning of July and cutting at the beginning of September,the overwintering rate and the yield of the next year’s first crop were not significantly different from those without cutting(P>0.05).On July 2nd,the alfalfa was sowed in each cut and uncut over the winter and the difference in rates was not significant(P>0.01).The overwintering rate of alfalfa planted from July 12th to July 29th was lower than that of alfalfa without mowing.【Conclusion】The best sowing time of alfalfa in Aluke′rqin Banner was from July 2nd to July 24th.The alfalfa sown on July 2nd was suitable for mowing in early September,but not for mowing in the same year after July 12th.
作者
杨秀芳
梁庆伟
张晴晴
娜日苏
潘翔磊
YANG Xiu-fang;LIANG Qing-wei;ZHANG Qing-qing;Narisu;PAN Xiang-lei(Chifeng Academy of Agricultural and Animal Sciences,Chifeng 024031,China)
出处
《甘肃农业大学学报》
CAS
CSCD
北大核心
2020年第4期137-143,共7页
Journal of Gansu Agricultural University
基金
现代农业产业技术体系建设专项(CARS-34).
关键词
紫花苜蓿
夏播时间
当年刈割时间
产量
越冬率
alfalfa
summer sowing date
mowing year time
yield
winter survival rate
