岸杂一号狗牙根在湖南低山丘陵地区的适应性研究

A Study of the Adaptability of Coastcross— 1 Bermuda Grass in Hunan Hilliness

在对岸杂一号狗牙根引种的基础上,根据生产需要,又进行了种苗越冬、牧草间作、林草结合和护堤效果的研究。结果表明:(1)岸杂一号狗牙根种苗在入冬前覆盖稻草、猪粪渣、火土灰和黄泥,种苗由自然条件下越冬率40％分别提高到98％、95％、95％和65％。(2)岸杂一号狗牙根分别与苏丹草、饲用墨西哥类蜀黍、象草间作,其产草量比岸杂一号狗牙根单作分别提高60.56％、13.40％和66.42％;比苏丹草、类蜀黍、象草单作分别提高70.59％、43％和16.02％。

In this paper, seedling winter survival, intercropping with tree species and effect in bank protection of the coastcross—1 Burmuda Grass were studied. The results showed that (1) the survival rate of seedling increased by.98% ,95% ,95% and 65% from the natural 40% by covering with rice straw, hog dung, ash soil and loess respectively; (2) the grass yields of intercropping with sudan grass, teosinte, Elephant grass were 60.56%,13.4% and 66.42%, higher than its one —course farming and higher than one—course farmiug of sudan grass, teosinte, Elephant grass by 70.59% , 43% , 16.02% ; (3) the experimental (grass) plot was greater than control (grassless) plot by 28.45%,42.64%,27.85% and 26.61%,16.27%, 15. 98% in trunk heights, top cover and ground stem diameters of young chestnut and persimmon tree) (4) the experimental plot was 93% in soil erosion less than contcol plot. The obvious effect of bank profection was obtained.