景泰绿洲三种小谷物生长时间对牧草产量和营养品质的预测

为了预测景泰绿洲春小麦、燕麦、黑麦的草产量和营养品质,通过2010年田间试验,获得3种小谷物的生长和产量等数据,测定样品中粗蛋白、粗脂肪、中性洗涤纤维、酸性洗涤纤维、粗灰分、可溶性碳水化合物含量,分析各指标之间的相关性,以及牧草饲用价值等级。结果表明生长时间可以准确预测3种小谷物的牧草产量和营养品质,模拟轮牧的3种小谷物饲用价值等级、粗蛋白产量显著高于收获干草的利用方式。研究可为3种小谷物的营养体生产、粮经饲种植结构调整、粮改饲等提供科学依据。

Using maturity to predict forage yield and nutritional quality of forage cereals in the Jingtai Oasis

The yield and nutritional quality of spring wheat,oats and rye in the Jingtai Oasis was assessed in a trial planted in 2010.Measurements included calendar time and production data to harvest maturity,crude protein,crude fat,neutral detergent fiber,acid detergent fiber,ash and soluble carbohydrate content.The relationships among time to maturity and feeding value traits were also determined.The result showed that yield and nutritional quality of forage was able to be predicted by growth duration.Feed value and crude protein yield resulting from simulated grazing were assessed as significantly higher than making hay from the forage.The results provided a scientific basis for the production of cereal forages in an oasis environment.