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用绵羊宿营法改良后的草地,其土壤肥力随着绵羊宿营强度的增加而提高;绵羊宿营强度、牧草混播组合对草地牧草的豆禾比例有显著影响;绵羊宿营强度及宿营时间对草地牧草的全年干物质产量有显著影响。综合各处理因素的效果,绵羊宿营法的最佳处理时间是C_8(每年8月);最佳宿营强度为A_2(8羊夜/m~2);优良牧草组合为B_1或B_2(鸭茅+白三叶或绒毛草+白三叶)。在最佳处理组合A_2B_1C_8的作用下,土壤肥力提高的幅度为:有机质51%,有效氮33%,有效磷460%,有效钾211%;土壤pH值从5.6提高到6.4;牧草产量达到11000DM kg/(hm~2·年)以上;优良牧草在草丛中所占比例约达100%。
The soil fertility increased with the increase of sheep camping intensity in the grassland improved by sheep camping method. The intensity of camping and the combination of pasturage had significant effects on the proportion of leguminous forages in pasture grassland; Annual dry matter production has a significant impact. According to the effects of different treatment factors, the optimum treatment time for sheep camping was C_8 (August of each year); the best camping intensity was A_2 (8 sheep night / m ~ 2); the excellent forage combination was B_1 or B_2 White clover or villus + white clover). Under the optimal treatment combination A_2B_1C_8, the increase of soil fertility was: organic matter 51%, available nitrogen 33%, available phosphorus 460%, available potassium 211%; soil pH increased from 5.6 to 6.4; pasture production reached 11000DM kg / (hm ~ 2 · years) above; fine pasture in the proportion of about 100% grass.