西藏高寒干旱半干旱地区饲草混播试验研究

Experimental Study on Forage Grass Mixed Sowing in Alpine Arid and Semi-arid Areas in Tibet

禾本科与豆科作物混播是一年生人工饲草种植方式之一,具有提高饲草品质、改良土壤养分的优点,不仅可以满足西藏农区草食畜养殖饲草的需求,还有利于提高农牧民收入和改善民生。本研究以燕麦草和箭筈豌豆为研究对象,对不同混播比例下饲草产量和营养品质进行研究。结果表明:燕麦和箭筈豌豆的混播比例为7∶3是较适宜组合,鲜草产量、干草产量显著高于其他混播处理;箭筈豌豆的粗灰分、粗蛋白营养品质显著高于其他混播处理,燕麦草粗脂肪、粗纤维、中性洗涤纤维、酸性洗涤纤维显著高于其他混播处理,混播饲草较燕麦草单播更有助于提高饲草营养品质。

It is one of the annual artificial forage planting methods that the mixed sowing of gramineous and leguminous crops.It has the advantages of improving forage quality and soil nutrients.It can not only meet the forage needs of herbivorous livestock breeding in agricultural areas of Tibet,but also improve the income and people’s livelihood of farmers and herdsmen.This paper studied the yield and nutritional quality of forage grass under different mixed sowing ratios of the oats and common vetch.The results showed that the mixture ratio7∶3 of oat grass and arrow pea was the best combination.The yield of fresh grass and hay were significantly higher than that of other mixed sowing treatments;The nutritional quality of crude ash and crude protein of arrow pea was significantly higher than that of other mixed sowing treatments,and the crude fat,crude fiber,neutral detergent fiber and acid detergent fiber of oat grass were significantly higher than that of other mixed sowing treatments.The mixed sowing forage was helpful to improve the nutritional quality of forage grass than that of oat grass sowing alone.