杂交狼尾草生育特性研究  

STUDIES ON GROWTH AND DEVELOPMENT TRAITS OF HYBRID PENNISETUM

作　　者：陈锦新[1] 张国平[1] 赵国平[1] 

机构地区：[1]浙江农业大学农学系

出　　处：《草业科学》1998年第4期14-17,共4页Pratacultural Science

基　　金：浙江省教委资助

摘　　要：研究了杭州生态条件下移栽杂交狼尾草的生育特性。试验表明，杂交狼尾草平均每叶展开需积温前３叶为７５．９℃、９叶至２０叶为６２．３℃；４叶１心开始分蘖；单株干物质积累高峰期出现于拔节后，茎叶粗蛋白含量随生育期而下降；重施拔节肥是高产优质的关键，根茎安全越冬应保持地温在１０℃以上。Growth and development traits of hybrid Pennistum were studied at the ecological condition of Hangzhou. It was showed that accumulated temperature needed for each leaf expansion was 75.9 ℃ for 1th to 4th leaf, and was 62.3 ℃ for 9th to 20th leaf. Tillers emerged at 4th leaf-age stage. The rapid accumulation of dry matter happened after stem elongation. Crude protein content in foliage decreased with growth period heavy fertilizater applied at stem elongation was very important for high yield and good quality. The ground temperature must be maintioned above 10 ℃ for overwintering of root stock.

关 键 词：狼尾草 杂交狼尾草 积温 分蘖 干物质积累 

分 类 号：S543.903[农业科学—作物学]