Six Tips for Planting Grass in Arid Areas
I. Under dry conditions, the introduction of extremely drought-tolerant or woody forage crops is necessary and possible. For example, if the feed mulberry is drought-tolerant and fast-growing, the survival rate of cuttings is more than 80%. When planting, it does not need to be planted with water, and it can be adapted to the climatic conditions of annual precipitation in the range of 180-300mm, which is equivalent to desertification grassland area, especially suitable for Sand planting in the area. The mulberry leaf has a crude protein content of 15-18% and an ash content of about 25%. It is used to feed cattle, sheep, camels, rabbits and pigs with significant yield increase and product quality improvement. Under dry conditions, 1,800 kilograms of sang twigs are harvested in the first year after planting, and 1 sheep can be fed, and 1.5-2 sheep can be fed after the second year. The feed mulberry can generally tolerate -30°C, and the soil after each culm can endure low temperature below -35°C. In 2001, it was confirmed by the Food and Agriculture Organization of the United Nations as a new type of forage crop worthy of promotion.
Second, planting area and use of ways to strive for science. The area of ​​grass should be determined according to the herd demand (such as planting 1 mu of grain can raise 20-30 pigs) and the size of the hay market, but it will result in a backlog of waste. In terms of use, it is best to feed green, followed by silage, in order to maintain the best nutritional ingredients for pasture.
Third, grass species should be matched with production and stability. In general, grasses and seed feeds are used as far as possible to take 2-3 combinations so as to utilize the effects of different plant heights and nutritional complements to obtain higher yields and quality, and the ability to resist disasters can also be improved. The current intercropping patterns include sandgrass and Caragana korshinskii, alfalfa and sea buckthorn, green corn (or grain pods) and peas, sweet sorghum and soybeans.
Fourth, we must combine lengths and periodicities. Perennial forage has the characteristics of one-year planting for many years and sparse growth in the first year. It is difficult to achieve remarkable results at one time. Therefore, it can be combined with fast-growing 1-year fast-growing forage crops to fully utilize light and hot water resources and achieve long-term Livestock and poultry provide high-quality green feed. For example, perennial crickets can be used as grain pods in the first year. They can receive 3,000-5,000 kilograms of green feed, and can also suppress weeds in paddy fields. After the second year, the pods will grow vigorously and connect with oysters. In addition, in the Loess Plateau region, the growth period of alfalfa is 60-70 days longer than that of grain crops, which is beneficial to the fuller utilization of the light and hot water resources.
V. Strengthen infrastructure construction and actively improve water supply conditions. Water is the lifeblood for the development of agriculture and animal husbandry production. If we can work harder and harder to collect water, the grass problem will be very promising. Therefore, experts in the industry believe that farmers in the northwest region should intercept rainwater as a source of supplemental irrigation through various channels and it is worth advocating. One of its methods is to build a "water cellar". This pit does not occupy land. Each cellar can store 30-60 cubic meters of water, just for 1 mu of land, which is of far-reaching significance for dry farming. Grain pods were planted in Yongdeng County, Gansu Province, and they were supplemented only two times during the sowing period and seedling period. The yield of barley fodder reached 14,000 kilograms per mu, which is considerable. Of course, the irrigation measures must also work closely with the “three-point seven-point pipe†to be effective.
6. Harvest in time, focusing on post-production processing. In order to ensure the yield and quality of forage grass, we must seize its best off-cutting period. For example, grain pods should be castrated at the beginning of flowering (at this time, the protein content of stems and leaves is about 18%). If wait until after harvesting, the protein content will be reduced to 5-8%, and the stalks in the next year will be reduced to 3%. -4%, it is a pity. After castration, if it is to be prepared for winter use, it should be sun dried in the field, and then crushed into grass powder or pelleted feed, or it can be cut into the silo with the cellar (the grain should be mixed with the corn half) . Experts have repeatedly emphasized that all the straw that has been blown by the wind, rain, and sun exposure has been reduced to a negligible amount of nutrients, and its palatability is very poor and undesirable.
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