摘要
利用草地建植方法，对１７５．７ｈｍ２退化人工草地进行了更新改良，结果，当年平均干草产量达３５７０ｋｇ／ｈｍ２，比未更新地带提高２０５８ｋｇ／ｈｍ２；播种牧草相对重量６５．９％，未更新地带１５．１％，优势度由重建前的２７．０％上升至６１．８％。恶性杂草竞争力下降，基本形成白三叶＋黑麦草＋鸭茅＋画眉草＋红三叶＋狗尾草＋白茅＋蒿类的格局。
fter resowing to improve 175.7 hm2 deteriorated sown pasture, the average hay yield reached 3 570 kg/hm2, increased by 2 058 kg/hm2 compared to unimproved pastures, the percentage of fine herbage reached to 6590% from 15.10%, SDR5 of seeding herbage rose to 61.80% from 27.00% during the first year. The weeds can also be controled by resowing herbage, so that the vegetation of improved pasture would be composed of white clover, perennial ryegrass, orchard grass, indian lovegrass, red clover, green brist tegrass, lalang gass and warmwood.
出处
《草业科学》
CAS
CSCD
北大核心
1998年第3期55-58,63,共5页
Pratacultural Science
关键词
草地
退化人工草地
更新
改良
效果
Deteriorated sown pasture, pasture establishment, recovery, improvement effect
