The sowing date of sowing grass at sowing time must be taken into account in the following aspects. Water, light and heat conditions are conducive to the rapid germination and colonization of pasture seeds, reducing the damage of weeds and pests to forage grass, and helping the pastures to safely pass through the winter or the safe summer. Meet the respective biological characteristics of pasture. The sowing time of pasture is usually divided into spring sowing, summer sowing, summer sowing and autumn sowing depending on the region and pasture species. In spring sowing, spring pastures in some annual pastures or perennial pastures should be planted in the spring. Spring sowing grasses can make full use of abundant natural resources such as rain and heat in summer and autumn. However, when spring forages are sown in spring, they are often endangered by weeds and require field management. In the north temperate regions of China, due to the low temperature and unstable weather in spring, low precipitation, and large evaporation, the spring sowing is often not successful. To improve the planting success rate, the planting success rate can be increased. In the summer or summer season where the rain and heat are relatively stable, there are some seasonal pastures that can be planted during this season, except for perennial pastures; autumn sowing should be carried out for some of the more recent annual pastures or perennial winter pastures. Because these pastures do not produce very good yields in the other seasons, they can obtain high yields in the second year after winter sowing, and autumn sowing forages can prevent weeds from being infested, but care should be taken to prevent freezing damage to pastures.
Seeding method The methods for sowing grass are mainly seed drilling, sowing, on-demand and seedling transplanting. Drilling is the use of seeders or manpower sowing, and sometimes artificial ditching. The row spacing during drilling is usually 15 cm to 30 cm. The specific width can be determined according to the soil moisture, fertilizer, etc. The row spacing of fertile and well-irrigated areas can be appropriately narrowed, and the relative rowliness and relatively dry areas can be appropriately widened. Some, such as alfalfa, clover, ryegrass, grain pods, etc. Spreading is the use of a spreading machine or artificially spreading seeds on the ground and then covering them with cover soil. This method will cause inconsistent seedlings, but it is suitable for large-scale pasture sowing, such as alfalfa, ryegrass, sand wangwang, and grass hibiscus. On-demand, also known as hole sowing, is to plant seeds at a certain distance from a hole. This method is generally used for the seeding of large and well-developed pastures. On-demand seeding not only saves seeds, but also is easy to emerge, such as Mexican corn, Sudan grass, bitter chives, Bunches of pine vanilla, Rumex and others. For transplanting seedlings, some forages that are difficult to grow directly can be cultivated first. When the seedlings grow to a certain height or at a certain stage, the seedlings are transplanted and transplanted into the fields such as the pine cone herb, Rumex, chicory and so on.
The depth of sowing should be determined according to the seed size, soil type, moisture content and other factors when sowing grass is planted. Smaller pastures should be sowed in a shallow manner. Larger seeds can be sowed in depth. Soils that are relatively moist can be sowed a little. Dry soil should be broadcast a little deeper. However, in any case, it is necessary to avoid excessive seeding or overburdening the seeds to affect seedling emergence, and to avoid too shallow seeds from causing germination without drying.
Seeding rate The seeding rate of pasture should be determined based on the biological characteristics of pasture, seed size, seed clarity, seed germination rate, soil fertility and soil preparation quality, sowing method, sowing date, and sowing weather conditions. When the natural conditions are determined, special attention should be paid to the germination rate and purity of the seeds, and the two indicators of germination rate and purity should be high, and the seeding rate should be lower; otherwise, the seeding rate should be increased.
Sweet Potato Leaf Juice Vermicelli Bag
Sweet Potato Leaf Juice Vermicelli Bag
Ningxia ZhaiXianSong Commercial and Trading Co.,Ltd. , https://www.nxupin.com