牧草

Based on the field experiments in 2000~2004, the yield of 2-year-old herbage was determined from the heading stage to the flowering stage and the relativities between the yield and 3 climate factors (including precipitation, sunlight and temperature) were analyzed by scatter diagram and linear regression method.

方法］通过2000~2004年的田间试验，在抽穗至开花期测定2龄牧草的产量，通过点聚图与线性回归法分析青海老芒麦草产量与3个气候因子的相关性。

Surface erosion occurs mainly in farmland, sparse grassland and woodland, is the rainfall and runoff erosion on the surface is relatively uniform, including the raindrop erosion, sheet erosion and rill erosion .

面蚀主要发生在坡耕地、稀疏牧草地和林地，是降水和径流对地表相对均匀的侵蚀方式，包括雨滴侵蚀、片蚀和细沟侵蚀。

The study, which aimed at 100 heads of breeding cattle marketed per annual and which object was the grazing for the flock of shorthorn beef cattle on sown pasture in the ZYCBC system, indicated that by making full use of pasture growth quantity and nutrient substance on sown pasture and supplementing mixed concentrate in late of breeding cow pregnancy, the number of beef cattle grazed in the while year had get to 375 heads, for the forage was budgeted and dynamic balance between the forage and beef cattle was gained and kept. It needed 642. 67t DM of forage annually in the system, 764t DM of which was provided by the sown pasture and 339t DM of which by forage crop land.

以ZYCBC系统短角肉牛群人工草地放牧饲养为对象，以年出栏100头种牛为目标，进行饲草预算和草畜动态平衡，充分利用人工草地的牧草生长量和营养物质，母牛怀孕后期适当补饲混合精料，全年牛群饲养量达375头，系统全年共需饲草642.67tDM，其中人工草地提供764tDM，饲料地提供339tDM。

The additive can effectively improved the native grass silage quality and stability.

添加菌剂可改善天然牧草青贮饲料的品质和稳定性。

Choosing when to harvest the forage plants directly influences the quality of the forage to be preserved as silage.

在牧草成熟期收获可得到较高的产量，但其品质会有所下降。

Method］ With 311-A optimum regression design, alfalfa, sweet clover, star grass, adsurgens, salt-tolerant grasses such as Leymus chinensis were selected to study the application level of nitrogen, phosphorus and zinc fertilizer.

方法］选择苜蓿、草木樨、星星草、沙打旺、羊草等耐盐牧草，采用311-A最优回归设计，比较氮磷锌施肥水平。

The study and exploitation on gramineal forage is essential to ecological construction and the development of stock raising in Western China.

牧草的研究和开发在我国西部生态建设和草地畜牧业发展等方面具有十分重要的意义。

Grass is the food of livestock, and is the material foundation of the development of stockbreeding.

牧草是家畜的食粮，是畜牧业发展的物质基础。

Mixed pasture has a lot of advantages in respect of quality, yield and communities stability, so that it is an essential part of intensivism stockbreeding.

混播草地牧草的质量优、产量高，群落稳定性好，是今后集约化畜牧业发展的重要内容。

Stylo is one of the most important forage legumes in tropical and subtropical area, and well adapted to low-phosphorus acid soils. However, its physiological mechanisms in adaptation to low- P acid soils have not been well studied.

柱花草是世界热带、亚热带地区广泛种植的高产豆科牧草之一，对酸性低磷红壤具有较好的适应性，但其适应性机理尚不清楚。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。