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Flax cultivation techniques
Flax, also known as flax, is a 1-year-old herb belonging to the genus Flaxaceae. It is usually divided into fibers for flax, oil flax and flax for its use. It is customary for people to use fiber as flax for flax and flax as flax for flax and oil. Flax is one of the important oil crops. Flax oil is fragrant and of good quality, rich in saturated acids, and high in iodine. It not only has good edible properties, but also has high industrial value. It is a good raw material for paints and inks. At the same time, it can also make tarpaulins, printing oils and oil paintings. And widely used in soap, leather, rubber industry. 1 Pre-broadcast preparation 1.1 Select soil preparation site to select deep, loose soil, strong water retention and fertility, well-drained slightly acidic soil; the former is corn, wheat, soybeans, beets as well, the implementation of 4 to 5 years or more rotation. When the soil can be ploughed, it should be ploughed immediately and ploughed in time after cultivating. The hoe should be fine and flat, and the residue should be removed so that the soil can be finely crushed, loosened, and preserved. This will facilitate the emergence of flax and preserve seedlings. 1.2 The application of base fertilizer is mainly based on organic fertilizers. Generally, organic fertilizer is applied at 667 to 2500 kg per 666.7 m2, 3 to 10 kg of calcium superphosphate, and 4 to 6 kg of potassium sulfate. It is applied 1 time before land preparation. 1.3 Seed treatment Seeds are selected, aired, and the germination rate is increased; 0.3% of seeds are used to prevent seedling disease. 2 Timely sowing 2.1 Seeding period According to the characteristics of flax seed germination at 1～3°C, it can be sown when the average temperature is stable to 7～8°C. Prematurely low temperatures affect seedlings and even bad crops; too late will affect the production of flax. 2.2 The sowing amount is generally mechanical sowing, sowing with a 7.5cm or 15cm seed drill after sowing. The seeding rate is 6-8kg per 666.7 m2, and 30-450000 mu seedlings. 2.3 The depth of sowing depends on the soil moisture and texture. The appropriate sowing depth is generally about 3cm. The plots with good lyrics and night tides should be shallow, and the plots with poor lyrics and rough preparations should be sowed deeper, but they must not exceed 3.5 cm, otherwise they will reduce the emergence rate. 3 Field management 3.1 The seedlings of herbicidal flax grow slowly, and the growth rate of weeds in early spring is almost 10 times that of flax. If weeding is not done in time, grass will be formed. The method of chemical weeding can be used. When the plant height is 3 to 4cm, 20% of every 666.7 square meters is used with 200 to 300g of chlorantranospere plus 70% of dimethyltetrachlorohydrin 50 to 70g of water and 30 to 40kg of water can be removed at the same time. And dicotyledonous weeds, weeding rate of up to 85% to 90%. 3.2 Fertilizer topdressing mainly nitrogen fertilizer. Siti Miao Fei: In combination with the first irrigation, 5kg of urea is replenished every 666.7 square meters. Shi Gonglei fertilizer: When the seedling height 15 ~ 20cm, the top of the flax bow, enter the period of vegetative growth and reproductive growth, every 666.7 square meters topdressing 8 ~ 10kg urea. If flax seedlings grow vigorously and there is no shortage of fertilizer, attacking budding fertilizers can be applied less or not. 3.3 Irrigation According to the characteristics of flax water requirement, generally the first irrigation of the seedlings at the height of 6 ~ 10cm, the first water should be finely irrigated with small water, so as not to flush the flax seedlings; the buds should be filled with the second water before flowering to meet the rapidity of the plants. The water requirement for growing and flowering peaches, after flax blossoms, depending on the weather conditions, such as drought, cracks in the soil, continue shallow watering, but to prevent lodging, so as not to cause a reduction in production. 4 Harvesting flax harvest at a timely manner will have a direct impact on the yield. The best harvest period of flax is the late yellow ripening period. The standard is that the lower leaves of flax turn yellow, some of the leaves fall off, 50% to 60% of the turnips turn yellow, some turn brown, and only a few grains have a slight sticky feeling, they can be harvested.