摘要
在海拔近 4 0 0 0m的达日县对二龄老芒麦Elymussibiricum人工草地进行不同施肥量和施肥方式的施肥试验 ,结果表明 :牧草的高度随施肥量的增加而显著增高 (P <0 0 1 ) ,分蘖期 1次施入与分蘖期与拔节期分 2次施入对牧草高度无显著影响 (P >0 0 5 ) ;施肥量对老芒麦人工草地的产草量增产效果极显著 (P <0 0 1 ) ,分蘖期和拔节期分 2次施肥的老芒麦产草量比分蘖期 1次施肥提高 1 2 % (P <0 0 1 )。从经济效益考虑较适宜的施肥量是 2 2 5kg/hm2 。
The effects of fertilizer amount and application method were studied for 2 year old Siberian wildrye( Elymus sibiricus )sown pasture in Dari county, Qinghai province Herbage height significantly increased with increase of fertilizer amount ( P <0 01) Applying fertilizer twice, once during tillering and once during the jointing stage, or applying fertilizer only once during tillering did not significantly affect herbage height ( P >0 05), but applying twice increased herbage yield by 12% ( P <0 01) Fertilizer amount very significantly increased forage yield ( P <0 01) Considering economic benefit, a suitable fertilizer rate is 225 kg/hm 2
出处
《草业科学》
CAS
CSCD
2004年第4期35-38,共4页
Pratacultural Science
基金
青海省"九五"攻关项目 ( 96 N 112 )
