摘要
2003-2004年，在海北州西海镇进行了多年生栽培牧草不同播种密度试验。结果表明：不同的播种密度，对牧草发育期不产生明显影响；对牧草草层高度有一定影响，密植时草层高度普遍较大；对种植当年的牧草覆盖度影响明显，第二年返青牧草覆盖度的密度间差异变小；对牧草产量的影响在种植当年也较为显著，豆科牧草三种密度产量比值为0．81：1．00：1．01，禾本科牧草三种密度产量比值为0．84：1．00：1．20。
During 2003 -2004, developed different seed density experiment on perennial artificial grazing in Xihai town, Haibei. Result shows： different seed density, toward grazing upgrowth - time has not bring obvious influence, toward grazing tallness has determinate influence, when density is big, tallness number ubiquity biggish; toward grazing overlay rate influence evidence in first year, different density overlay rate difference of grazing that is able to turn green became small in second year, the influence was more distinct also toward grazing output in first year, bird＇s - foot output ratio of three density is 0.81 ： 1.00 ：. 1.01, gramineous grazing out- put ratio of three density is 0.84 ： 1.00 ： 1.20.
出处
《青海草业》
2007年第3期8-11,共4页
Qinghai Prataculture
关键词
播种密度
生产性状
多年生牧草
Seed density
Yield character
Perennial artificial grazing
