All doses of the four improved the growth of perennial black wheatgrass more or less.Under the same dosage,Kang Le was able to increase the grass height and biomass significantly,YNEC and Lv Neng...

• 中国农科院兰州畜牧与兽药研究所农业部兰州黄土高原生态环境重点野外科学观测试验站甘肃兰州;