Comparison Experiment of High-yield and Excellent Forage Selection in High-altitude and Cold Pastoral Areas of Northern Tibet
In order to explore the combination planting of different types of forage varieties and solve the problem of forage shortage in the grassland of northern Tibet.Based on the continuous research on oat planting and the demonstration and promotion of new varieties over the years,different oat va-rieties and different mixed sowing combinations were introduced to plant different oat varieties,and the production performance of 7 groups of forage varieties was compared under the conditions of water-saving self-pressure irrigation and rat isolation and control fence in northern Tibet.The results showed that the single sowing yield of Qinghai oat variety 444 was the highest,and the hay yield reached 964.3 kg/mu.The mixed sowing yield of white oat and high stalk rape was the highest,and the hay yield reached 940.4 kg/mu.Therefore,artificial grassland with Qinghai 444,white oat and high-stick oil can be planted in a certain area in the alpine pastoral areas of northern Tibet.Through scientific planting management technology,artifi-cial grassland with annual grass cut can be cultivated and used as winter grazing grassland after mowing and stubble,which not only increases the lo-cal reserve of forage for disaster prevention and resistance in winter and spring,but also can be used as grazing grassland.Alleviating grazing pressure on natural grassland while solving forage shortage.This study provided theoretical support for the introduction and screening of high yield and high quality forage in strengthening the region,and further improved the restoration effect of degraded alpine meadow.
NETL
NSTL
万方数据
维普
