盐碱地混播牧草地建植技术

Techniques of Mixed Sown Grassland Establishment in Saline and Alkaline Land

混播牧草改良盐碱荒地具有明显效果。选择苜蓿、草木樨、冰草、披碱草、老芒麦、野大麦、碱茅等耐盐牧草,根据盐碱含量确定草种组合及比例,播种量为22.5～30.0kg/hm2;整地后不起垄,平地撒播;生长当年除2次杂草。牧草生长第2年和第3年平均干草产量分别达到9043.3 kg/hm2(含草木樨)和3173.7kg/hm2。产量分别是原始植被的5.6倍和2.0倍。优质牧草占总产量的81.2%和77.1%。牧草播种当年碱斑较大,次年碱斑缩小,第3年碱斑全部消失,牧草均匀覆盖地面,长势旺盛。

Obvious effect was obtained for improvement saline and alkaline land by mixed sown saline tolerance forage ,alfalfa, sweet clover, crested wheatgrass, lyme grass, Siberian wildryegrass, wild barley, weeping alkaligrass have been used in this experiment, sowing rate was 22.5-30.0kg/hm^2according to species compensation in level planting, weeds elimination two times in first year. Production of forage can reached 9043.3kg/hm^2 and 3173.7kg/hm^2 in second and third year respectively. Its 5.6 and 2 times more than original grassland .high quality forage is 81.2%and 77.1% in total production. Alkaline sport were bigger in first year, and then decreased in second year ,disappear in third year .forage vigorous and cover land welldistrbuted.