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为了加速天然草山的改良,提高牧草产量和营养价值,我们于1984年4月17日至5月27日,在云雾山保护区进行了大面积补播改良试验,共补播沙打旺17280亩(每亩下籽0.25公斤),红豆草720亩(每亩下籽0.25公斤)取得了很好效果.1.提高了植被的高度和覆盖度据1985年8月27日测定,经过改良植被的高度由平均15厘米提高到95～110厘米,总盖度由30%左右提高到90～110%;而未经改良的草场植被低矮稀疏,分布不均.
In order to speed up the improvement of natural grassy mountains and increase the yield and nutritional value of forage grass, we conducted a large-scale supplementary sowing improvement experiment in the Yunwu Mountain Nature Reserve from April 17 to May 27, 1984, which provided a total of 17280 mu (0.25 kg per mu under the seed), 720 acres of safflower (0.25 kg per acre under the seed) has achieved good results .1 to improve the vegetation height and coverage as measured on August 27, 1985, after the improvement of vegetation The height increased from 15 cm to 95-110 cm, and the total coverage increased from 30% to 90-110%. However, the unimproved grassland was low and sparse with uneven distribution.