计划火烧对林间草地产草量和营养成分的影响  

The Planing Fire Affect Yield and Quality of Grass in Forest.

作　　者：杨道贵[1,2] 马志贵[1,2] 鄢武先[1,2] 杨光荣 刘勇 

机构地区：[1]四川省林科院 [2]四川省西昌农专

出　　处：《中国草地》1997年第1期45-48,共4页Grassland of China

摘　　要：有计划地人工控制火烧林间草地，可有效地提高牧草的营养成分含量。试验区牧草覆盖度为５４．１７％，平均产草量６６５ｇ／ｍ２，牧草含水量７１．８５％，干物质中无氮浸出物５５．４１％，粗纤维２３．６２％，粗蛋白质１０．２％，粗脂肪２．３１％，粗灰分８．４６％；而对照区（未烧区）牧草覆盖度为４８．７５％，平均产草量６９２．８８ｇ／ｍ２，牧草含水量７１．４３％，干物质中含无氮浸出物５３．６６％，粗纤维２６．８９％，粗蛋白质１０．０３％，粗脂肪２．０８％，粗灰分７．２８％To fire grassland in forest. The grass cover degree is 54.17%. The yield of grass is 665g/m 2 in testing area. The water number of grass is 71.85%. The NFE (nitrogen-free extact) of dry grass is 55.41. The crnde fiber of dry grass is 23.62%. The crude protein of dry grass is 10.20%. The crnde fatty is 2.31%. The mineral of dry grass is 8.46%. Don ,t fire grassland. The grass cover degree is 48.75%. The yield of grass is 692.88g/m 2. The water number is 71.43%. The nitrogen-free extact of dry grass is 53.66%. The crude fiber of dry grass is 26.89%. The crude protein of dry grass is 10.03%. The crude faety of dry grass is 2.08%. The mineral of dry grass is 7.28%.

关 键 词：林间草地 计划火烧 覆盖度 产草量 营养成分 

分 类 号：S812.3[农业科学—草业科学]