干旱胁迫对两种牧草种子萌发和幼苗生长的影响  

Effect of drought stress on germination,seeding growth of two forages

作　　者：王彦龙[1] 王晓丽[1] 李世雄[1] 盛丽[1] 景美玲[1] 

机构地区：[1]青海大学,青海省畜牧兽医科学院,西宁810016

出　　处：《青海畜牧兽医杂志》2017年第6期5-8,共4页Chinese Qinghai Journal of Animal and Veterinary Sciences

基　　金：青海省科技厅重大专项“盐碱地牧草种植技术集成示范”(2014-NK-A4-5)

摘　　要：利用正常供水、轻度干旱、中度干旱和重度干旱4种水分处理对同德小花碱茅(Puccinellia tenuiflora cv.Tongde)和中苜一号紫花苜蓿(Medicago sativa L.cv.‘Zhongmu No.1’)做抗旱栽培研究,对其栽培后种子萌发与幼苗生长状况及水分利用率进行测定,结果表明:两种牧草均具有较强的抗旱性。在重度干旱处理下,两种牧草的出苗率、水分利用率均较高。中苜一号紫花苜蓿在重度干旱下生长状况较好,同德小花碱茅在中度干旱条件下生长状况较好。中苜一号紫花苜蓿较同德小花碱茅抗旱性强。The drought - resistant cultivation research for Puccinellia tenuifLora and Medicago saliva L. cv. Zhongmu No. 1 were implemented by four kinds of water treatment of the normal water supply, mild drought, moderate drought and severe drought, and seeds germination, seedling growth and water utilization efficiency were measured. The results showed that two kinds of forage present strong drought. Under the treatment of severe drought, germination rate and wa-ter utilization efficiency of two kinds of forage grass were the higher, Medicago sativa L. cv. Zhongmu No. 1 present bet-ter growth. Under the moderate conditions, Puccinellia tenuiflorais present better growth. It is concluded that Medicago sativa L. cv. Zhongmu No. 1 is more drought - resistant than Puccinellia tenuifLora.

关 键 词：抗旱性 同德小花碱茅 中苜一号紫花苜蓿 地上植物量 

分 类 号：S54[农业科学—作物学]