First, the problem Due to its good drought resistance characteristics, many alfalfa growers in the production of alfalfa produced the idea that they did not need irrigation and watering, and they also had the practice of waiting for rain and relying on producing grass. In fact, earthworms are plants that are very sensitive to the supply of water. It is estimated that about 700-800 kg of water are needed for each kilogram of dry matter produced. In the production of alfalfa, the yield of alfalfa per unit area cultivated on dry land and irrigated land is also very different. The dry alfalfa cultivated alfalfa hay yield is generally 400-500 kg/mu, and the irrigated land is double the dryland yield, even More. Second, the solution 1. Irrigate on time. The critical period of needy water is in the period of reproductive organ formation or early flowering. Usually, the water requirement is less when spring returns to green, and the water requirement increases gradually as the plant grows and develops after turning green, and the water requirement reaches the highest peak at the time of budding. At this time, the required soil moisture content is 60%~ 80%, afterwards, the water requirement gradually declines, so from the late budding stage to the early flowering stage, according to soil moisture and weather conditions, watering irrigation is needed to ensure the water requirement for the growth and development of alfalfa and promote the growth of alfalfa and the formation of yield. In the production of alfalfa, it can be cut and used several times a year. After each cutting, it is necessary to maintain the moisture and provide enough water for the regenerated plants. 2. Choose the irrigation method. The methods of irrigation are mainly watering and sprinkling. Watering is the way to make the water flow into depressions through the channels. The irrigation methods that infiltrate into the soil are divided into two types: flood irrigation and furrow irrigation. Manly irrigation wastes water seriously, especially in high temperature and windy season. Furrow irrigation requires that the soil be smooth and supporting the ditches, otherwise it is prone to uneven irrigation. The amount of irrigation varies depending on the soil and conditions, and it is generally 80 square meters per mu. Sprinkler irrigation is the use of sprinkler equipment to spray pressurized water into the air, and then spilled onto the surface of the earthworm and soil. The biggest advantage of sprinkler irrigation is water saving, and is not limited by the terrain. It is suitable for places where water is lacking, labor is tight and the soil is uneven. Sprinkler irrigation, irrigation irrigation water than flood irrigation 50%, in the permeability of a good sand can save 60% to 70%. However, winds of Grades 3 to 4 will affect the uniformity of spraying, and the cost is relatively high. It requires a certain amount of equipment and investment, and is suitable for the use of large-scale alfalfa planting units. 3. Do well drainage. If you are not able to tolerate flooding, you should choose a plot with a relatively high topography and a low groundwater level. In order to avoid causing rot roots and even death, we should do a good job in grassland water removal in the rainy season.
Product Dimesnion: 6.18" x 4.13" /15.70cmx10.50cm
Mask Fabric Material: 5-ply material,100% polypropelyne
Ear Loop Material: 70% polyamide, 30% elastane
when to use: suitable for adults to use daily in a variety of settings such as home, outdoors and work
packaging: 5 pcs of mask in one sealed printed plastic bag to ensure hygiene or 10pcs per box
certification/standard: EN149:2001+A1:2009 and CE Mark
about the manufacturer: Kapanou is china-based healthcare company
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