摘要
2010年～2011年,在呼和浩特内蒙古农业大学牧草试验地,对根茎冰草新品系进行了2年的田间旱作播期试验,从2010年3月底至8月底,每隔1个月播种1次,共有6个播期处理。对物候期、生长速度、根茎状况、草产量及种子产量等生长发育指标观测的结果表明:根茎冰草适于早播,5月底之前播种为宜,尤以3月底土壤解冻后及时播种效果最好。3月25日播种,6d后即可出苗,当年株高及生长速度均为最高,分别为41.3cm和0.2cm/d,产草量也为最高,鲜、干草产量分别为11 747kg/hm2、4 518kg/hm2,种子产量也为最高797kg/hm2;而且,5月底之前播种,当年即可产生根茎,有利于发挥根茎冰草的生长优势,获得良好的建植效果。
The different sowing date test of A.michnoi Roshev.were carried out for two years in Inner Mongolia agriculture university forage experiment station in 2010-2011.From the end of March to the end of August in 2010,the seeds were sowed once a month and there were a total of 6 seeding date.The growth index of the phenophase,the growth-rate,the roots and rhizome,the grass and seed yield were observed.The results showed that：the appropriate sowing time was early spring before the end of May,especially the 25th March was the best sowing date after soil thaw.On 25th March,the seedling was emergency after six days.The plant hight and growth-rate are all the highest,respectively 41.3cm and 0.2cm/d.The grass yield is also the highest,fresh yield and hay yield are respectively 11747kg/hm2 and 4518kg/hm2.The seed yield is 797kg/hm2 that is the best;Moreover,sowing date before the end of May,the rhizome can be produced that would be conducive to taking advantage of the growth and have good effects of planting.
出处
《内蒙古农业大学学报（自然科学版）》
CAS
北大核心
2012年第3期120-124,共5页
Journal of Inner Mongolia Agricultural University(Natural Science Edition)
基金
内蒙古自治区科技厅"优质全价草产品开发"(20091401)
"优良牧草种质资源创新研究与示范"(20101405)
内蒙古自治区自然科学基金"冰草新品系生物学性状与机理研究"(20090403)
关键词
播期
根茎冰草
新品系
生长发育
产量
Sowing date
A.michnoi Roshev.
new strain
growth
yield
