大理地区几种青贮牧草产量及营养成分评价分析

Evaluation and Analysis of Yield and Nutrient Content of Several SilageGrass in Dali Prefecture

在大理州巍山和洱源县种植高丹草3901、甜高粱大力士、甜高粱3701、墨西哥玉米4个品种牧草,记录乳熟期生育天数,刈割两茬测定鲜草、干物质产量及干物质、粗蛋白、粗脂肪、粗纤维、粗灰分、钙、磷含量。结果显示,在巍山种植的高丹草3901鲜草产量可达154.6t/hm2,干物质产量可达26.71t/hm2,干物质含量可达23.38%,粗蛋白含量可达9.76%,生育期日产干物质、粗蛋白、粗脂肪、粗纤维、钙、磷在4个牧草中都是最高的。综合评价,在大理州内推荐种植的品种优先顺序为:高丹草3901、甜高粱3701、甜高粱大力士。墨西哥玉米的鲜草产量和营养成分均不具优势,在洱源种植的一茬后就死亡,在巍山种植的第二茬死亡,说明墨西哥玉米不适宜在大理州内种植。

Four varieties of Gaodan No.3901,Sweet sorghum hercules,Sweet sorghum No.3701 and Mexican corn were planted in Weishan and Eryuan county of Dali prefecture to record the number of days of growth in the milk ripening period.The contents of fresh grass,dry matter,crude protein,crude fat,crude fiber,crude ash,calcium and phosphorus were determined by cutting two stubble.jean grass planting grass The yield of Gaodan No.3901 planted in WeiShan county can reach 154.6t/hm2,dry matter yield can reach 26.71t/hm2,dry matter content of 23.38%,crude protein of 9.76%,the daily dry matter,crude protein,crude fat,crude fiber,calcium and phosphorus in growth period were the highest in the four varieties of grasses,comprehensive evaluation of Gaodan No.3901 higher grass yield and higher nutrient composition,the result that priorities within recommended varieties were Gaodan No.3901,Sweet sorghum No.3701,Sweet sorghum hercules in Dali prefecture.Fresh grass yield and nutrient composition of Mexican corn are not superior.One crop planted in Eryuan dies,and two in Weishan,indicating that Mexican corn is not suitable for planting in Dali prefecture.