摘要
玉米的饲用营养价值是随着生育时期地推进而不断变化的,本研究结果表明:玉米成熟期子粒产量最高但不是饲用营养价值最高的时期,粮饲兼用玉米鲁单50和高油玉米高油115在乳熟末蜡熟初期收获,鲜物质产量最高,粗蛋白含量及产量也最高,其他营养成分也较高,可以获得最高饲用营养价值;而青饲玉米科多8号在乳熟期收获可以获得最高的饲用营养价值。另外,3种不同类型玉米相比较,青饲玉米科多8号的生物产量高,饲用营养成分尤其是粗蛋白产量最高;高油玉米粗脂肪的含量和产量都是最高的,在作为能量饲料方面将会发挥更大的作用。
The harvesting time has obviously effect on forage nutritive value of corn. The experimental results indicated that maize forage nutritive value was not optimum at the black layer stage, on the contrary, forage nutritive value of LD 50 and HO 115 was optimum at the end of the milking or at the early waxen stage, that of KD 8 was optimum at the milking stage. Furthermore, among three type corns the biomass and the crude protein outputs of KD8 were the highest; the ether extract content and output of HO 115 was the highest.
出处
《华北农学报》
CSCD
北大核心
2004年第2期66-70,共5页
Acta Agriculturae Boreali-Sinica
基金
国家自然科学基金项目(30170546)
农业科技跨越计划(农财发[2003]19号)
