多次刈割对3种小谷物饲草生产的影响OA

Taking Triticum aestivum(spring wheat),Avena sativa(false oat grass),and Secale cereale(rye),as the research objects,the responses of forage regeneration and forage quality to multiple mowing and environmental factors were discussed.The yield of three kinds of small cereals with multiple cutting needs less heat than that with one cutting,and the predicted yield of rye is the highest and spring wheat is the lowest.Among the three kinds of small grain forage quality,the stability of crude ash was the best,and the stability of soluble carbohydrate was the worst.The stability of neutral detergent fiber,acid detergent fiber,crude protein and ash after multiple cutting was significantly higher than that after one cutting(P<0.05),and the stability of rye was better than that of spring wheat and oat.The plant height,tiller and yield of the three kinds of millet were the highest on the 85th day,and multiple cutting significantly increased the growth rate(P<0.05).The forage food equivalent of rye was higher than that of spring wheat and oat,and the forage food equivalent of multiple cutting was significantly higher than that of single cutting in 65～105 days(P<0.05).The growth rate of small grain was significantly positively correlated with sunshine rate,precipitation and relative humidity.Research results,multiple cutting mainly increased the growth rate of tiller density to improve the regeneration of grain yield,neutral detergent fiber,ash and other nutritional quality.