补播技术在库布齐沙地中的应用

Application Research of Interseed Technique on Kubuqi Sandy Pasture

本文研究了库布齐沙地草场补播改良技术，确定出适宜的补播牧草品种及播前种子处理技术；适宜的补播时间；正确的补播地形和合适的补播机器。改良后的沙地草场生态环境明显改善，土壤养分提高，植被盖度和产草量随着补播年限的增加而增加，补播第三年，植被盖度达到78％，干草产量5250kg/ha，分别比补播前提高3倍和7倍，流沙移动得到控制。生态环境的改善，带来了可喜的经济效益，草场载畜量由原来1－1．5ha一个羊单位提高到lha二个羊单位，每公顷草地年纯增246元，比补播前提高2倍。

The purpose of this paper was ot study the interseed technique on Kubuqisandy pasture, and determine suitable grass species for interseed, the technique of dealingseed,right interseed time,correct interseed terrain and appropriate interseed machine. Afterinterseed,the ecological environment of the sandy pasture ameliorated significantly. The nu-trition of soil increased,and vegetation cover and yield enhanced along with years passing. Inthe third year,the vegetation cover reached to 78%,and yieldreached to 5250kg/ha. The veg-etation cover and yield were 3 times and 7 times as much as those before interseed. Movingsand was controlIed. Ameliorating ecological environment leaded to high economical benefits.The capacity of carrying goat on interseed pasture enhanced to 2 goat units/ha from l goat u-nit/l - 1. 5ha. The net benefit was 246 yuan/ha more than that before interseed in each year,increasing 2 times.