刈割方式对“三盛308”饲用玉米品种营养成分及生长特性影响

Effects on Nutrient Composition and Growth Characteristics of Cutting Methods of “Sansheng 308” Forage Maize Varieties

研究发现甘肃省渭源县二阴山区广泛种植的饲用玉米品种"三盛308"有适应性强耐刈割特点,第1、2、3茬的平均分蘖数为11.88支/株、9.64支/株、8.97支/株,单株鲜草平均质量为309.32g/株、242.71g/株、214.93g/株。粗蛋白、粗纤维和干物质、磷、钙元素随刈割次数增加而下降,粗灰分和粗脂肪不收刈割影响,鲜草胡萝卜素含量随刈割次数增加呈现先上升后下降趋势。

The study found that forage maize varieties of ＂Sansheng 308＂ was widely planted in the Er --yin mountain area of Weiyuan county in Gansu province and had the characteristics of strong adaptability and mowing resistance. The average number of tillers 1, 2, 3 stubble was 11. 88 branches/plant, 9. 64 branches/plant, and 8.97 branches/plant, respectively; the average weight of fresh plant was 309.32 g, 242.71 g and 214.93 g per plant. The results showed that crude protein, crude fiber, dry matter, phos phorus and calcium decreased with the increase of mowing times; the crude ash and crude fat were no af fected by mowing; and the content of carotene of fresh grass increased and then decreased with the increase of mowing frequency.