论文部分内容阅读
把大麦和燕麦与大田豌豆混作，可以增加饲料产量，改善饲料品质。本试验的目的，就是评价两个大麦品种，两个燕麦品种，以及不同谷物—豌豆混作时播种量对饲料生产、粗蛋白含量（CP）和氮产量的影响。大麦品种是“Bowman”和“Horsford”，燕麦品种是“Dumont”和“Magnum”。无论是净作还是混作，用作饲料生产的品种（Horsford，Magnum）所生产的饲料，等于或多于用作粮食生产的品种（Bowman，Dumont）所生产的饲料（P≤0.05）。当谷物按等于或大于净作时的播量混作时，饲料生产不受影响，而当播量只有净作一半时，饲料生产减少。饲料产量不受豌豆播种量的影响，但在4个环境一年中，有3个环境一年的CP含量随豌豆的播量增加而增加。饲料产量不受混作的影响。这些资料说明，为了获得最高的饲料产量，在大麦—豌豆和燕麦—豌豆混作中的谷物成分，应该按等于或大于净作时的播种量进行播种。饲料中的CP含量随混作中豌豆播量的相对比例增加而增加，但饲料N产量没有影响，因为谷物对产量的贡献大于豌豆对产量的贡献。
Mixing barley and oats with field peas can increase feed yield and improve feed quality. The purpose of this experiment was to evaluate the effects of two barley varieties, two oat varieties, and different grain-pea seeding rates on feed production, crude protein content (CP) and nitrogen production. Barley varieties are “Bowman” and “Horsford”, and oat varieties are “Dumont” and “Magnum”. The feed produced by Horsford, Magnum is equal to or more than the feed produced by Bowman, Dumont (P ≤ 0.05), either net or mixed. Feed production is unaffected when grains are mixed at seeding rates equal to or greater than the net crop, while feed production decreases when the seeding rate is only half net. Feed production was not affected by pea seeding, but in one of four environments, three of the three environments experienced increases in CP per year as seeding increased. Feed production is unaffected by mixing. These data indicate that the grain composition in the barley-pea and oat-pea blend should be sowed at or above the net seeding rate in order to obtain the highest feed yields. The dietary CP content increased with the relative proportion of pea broadcasts in the mix, but had no effect on feed N production because the contribution of grain to the yield was greater than the pea contribution to the yield.