摘要
测试了１２种牧草的粗纤维（ＣＦ）、中性洗涤纤维（ＮＤＦ）含量和各自的无氮浸出物（ＮＦＥ）含量。牧草细胞壁损失含量（ｙ）与ＮＤＦ含量（ｘ）间呈非常显著正相关（ｒ＝０．９８０７Ｐ＜０．０１），其线性回归方程式为：ｙ＝－１６．６６＋０．７９ｘ（Ｐ＜０．０５），ＮＤＦ法ＮＦＥ含量（ｙ）与ＮＤＦ间呈非常显著负相关（ｒ＝－０．９０１９Ｐ＜０．０１），其线性回归方程式为：ｙ＝５６．２５－０．７２ｘ（Ｐ＜０．０５）。ＮＤＦ法ＮＦＥ含量较ＣＦ法ＮＦＥ对照达显著水平（ｔ＝６．７０９＞ｔ０．０１＝３．１０６Ｐ＜０．０１）。
Contents of crude fiber (CF)、neutral detergent fiber (NDF) and their nitrogen-free extract (NFE) in 12 herbage species were determined. There is a significant s 194～290 d, and it would be shortened with the sowing time delayed. Sowing time had a great influence on the days of tillering to jointing, and single ridge to double ridges. It must be induced by 0～11 ℃ low temperature from single ridge to double ridges. The appearance of double ridges was the morphological symbol which L.multiflorum had passed vernalization. Sowing in spring, for lack of low temperature inducing, the development would stay in single ridge stage, and it could not be head sprout, and produce seeds. There was a significantly possitive relation between seed yield and the whole growth period. Seeds produced in Nanjing area, the L.multifolium, its best sowing time is 20, August to the first ten days of September. The day mean temperature was lower from tillering to jointing, and time was longer, the accumulating temperature was higher. The sunlights was more from head sprout to ripening. It did good for increasing seeds yield. The key period which affected seeds yield was from tillering to jointing. It had a great important meaning for increasing seeds yield of L.multiflorum to strengthen management of water and fertilizer.
出处
《草业科学》
CAS
CSCD
北大核心
1997年第3期28-31,共4页
Pratacultural Science
关键词
粗纤维
测定
中性洗涤纤维
牧草
细胞壁成分损失
Lolium multiflorum, growth perid, young ear differentiation, seed production
