When is the autumn radish sow? The growth period of autumn radish is generally 60-100 days. It is harvested in the early winter and has a certain heat resistance. It is generally characterized by high yield and storage, and is the main storage dish for winter and spring. The following is mainly about the cultivation techniques and field management of northern radish. 1. Select the plot Radish roots are deep and leafy, have strong fertility, require more fertilizer, and are more harmful to pests and diseases. Pay attention to the selection and rotation of the mouth. The top of the radish should choose a vegetable field with more fertilization and consume less nutrients, preferably cucumber, melon, etc., followed by potatoes, beans and other vegetables and wheat, corn and other food crops. It can also be intercropped with field crops to make full use of land and increase income. Autumn radish can be used to smooth the surface of fleshy roots and improve quality. However, it is easy to cause pests and diseases. In order to produce high yield and stability, it is not advisable to work with cruciferous vegetables such as cabbage and cauliflower to prevent root-borne diseases. It is best to rotate once every 3-4 years. 2. Choose excellent varieties Different varieties of radish have great differences in yield and disease resistance. Therefore, when selecting varieties, it is necessary to consider the high yield and the actual situation of local pests and diseases, so that the growth period of the variety and the local suitable for radish The number of growing days is consistent, and the variety is selected according to the purpose of cultivation and the local climate and soil conditions. It can be used in Deri 2, Dihuang, Outcrop, 791, Weiqing, Dahongpao, Lantern Red and other varieties. 3. Soil preparation and fertilization The primary condition for the growth of radish is that the soil is loose and fertile. Therefore, it is necessary to select deep neutral or acidic sandy loam in the soil layer for deep cultivation. The depth of ploughing varies from species to species, and large or deep-rooted radish varieties are generally deep-cultivated by 25-35 cm. Shallow cultivars can be properly ploughed. The radishes are broadcast live, cannot be transplanted, and seeded with seeds. The land is required to be leveled, the soil is finely broken, and there is no sloping. Otherwise, the seed will be infiltrated into the soil and affect the emergence of seedlings, and it will easily cause dead seedlings, resulting in lack of seedlings and ridges. Adding base fertilizer is the basis for the high yield of autumn radish. The bottom fertilizer should be based on organic fertilizer. The bottom fertilizer should be combined with the whole land. The fertilization of the fertilized per mu should be 3000-4000 kg. The fertilizer must be finely divided and the soil and fertilizer should be mixed thoroughly. 4. Sowing time. White radish is a semi-hardy-tolerant vegetable, which is mild and cool, with a large temperature difference. The seed can be germinated at 2-3 °C, the suitable temperature for germination is 20-25 °C; the seedling stage can withstand high temperature of about 25 °C; the suitable temperature for leaf growth is 15-20 °C, and the optimum temperature for fleshy root expansion is 13-18 °C. Sowing time is too early or too late. Sowing too early, the radish is easy to rotten (that is, the soft rot is serious); if the sowing is too late, the growth is small, the radish is small, and the yield is low. According to the cultivation experience in recent years, the sowing time of my autumn radish is generally 3-5 days after the beginning of autumn. 5. Seeding High ridges before sowing, ridge width 30 cm, height 15 cm, groove width 20 cm. Due to the poor survival rate of transplanting, the live broadcast method is generally used, with a row spacing of 50 cm, a plant spacing of 25 cm, a seeding depth of 1.5 cm, and 3-5 capsules per point. When the seedlings appear 2 true leaves, the seedlings are carried out. When the seedlings are planted, attention should be paid to weak and strong, and 2-3 strains of seedlings per seedlings, and seedlings of 4-5 true leaves of seedlings. 6. Field management (1) and time seedlings: The seedlings should master the principles of early seedlings, divided seedlings, and late seedlings. Production of general seedlings 2-3 times. One plant was kept on-demand, and the seedlings were kept at a distance of 10-13 cm. Seedlings should be removed from the seedlings that are affected by pests and diseases, which are weak, deformed and not characterized by the original species. (2) Topdressing and watering: The correct management of fertilizer and water to balance the growth of the aboveground and underground parts is the key to obtaining high quality and high yield of radish. In management, the early stage should promote the robust growth of leaves and absorbing roots, laying a material foundation for the later expansion of fleshy roots. However, when vegetative growth reaches a certain level, it must be controlled to promote the timely transport of nutrients to the storage organs. During the rapid expansion of the fleshy roots, it is necessary to ensure that the leaves have a long life and strong viability, so that they can produce more nutrients and ensure the expansion of the fleshy roots. Small varieties with short growth period, such as sufficient base fertilizer, can be less fattening. Large-scale mid-late maturing varieties, long growing period, high yield, large amount of fertilizer, in addition to the application of base fertilizer, but also look at seedlings. In the early stage of straight root growth, a quick-acting nitrogen fertilizer is applied to promote the growth of assimilated leaves and absorbing roots. After the fleshy root begins to expand, that is, after the belly is broken, the top dressing should be applied again. It can be combined with watering to apply water to decompose human excrement, and increase phosphorus and potassium fertilizer to promote the transport and accumulation of nutrients. If the soil is weak or the base fertilizer is insufficient, a small amount of quick-acting nitrogen fertilizer can be applied at the seedling stage, and the effect is better. Radish requires a lot of trace elements. Boron deficiency can cause radish brown heart rot and root epidermis cork, so pay attention to the application of micro-fertilizer. Radishes have different water requirements at different stages of growth. When planting, it is necessary to supply sufficient water to germinate quickly and tidy. During the seedling period, it should be poured less before the break, so that the roots can penetrate into the soil layer. In the growing season of Yewang, it is necessary to water the right amount to ensure the growth of the leaves. To the end of the growth of fleshy roots, to ensure that the soil is moist, to prevent dryness and humidity. At this time, if the water supply is insufficient, it will not only affect the expansion of the fleshy root, but also increase the roots and rough texture, leading to jealousy. If there is too much soil moisture, drainage should be carried out in time to prevent root rot. (3) cultivating and weeding: autumn radish is in the high temperature and rainy season in the early stage of growth. It should be timely hoeing and cultivating, and the cultivating should be based on the principle of shallow first, then deep and shallow. After the first seedling, the first cultivating should be shallow, and the ground can be cut. The cultivating can be properly deepened, but the root system should not be damaged. (4) Pest control: In the cultivation of radish, common insect pests include aphids and cabbage caterpillars; common diseases mainly include soft rot and downy mildew. The aphids can be sprayed with 10% imidacloprid 1000 times solution, 40% dimethoate 1000-1500 times solution or 10% cypermethrin EC 2000-5000 times solution. The cabbage caterpillar can be controlled by the bio-pesticide Bacillus thuringiensis emulsion or the acaricidal 800-1000 times solution. The chemical agent can be sprayed with 50% phoxim 1000-1500 times liquid or 20% fenvalerate 3000-5000 times liquid. Soft rot can be controlled by bio-pesticide neomycin, agricultural streptomycin, streptomycin sulfate 200 mg / kg. When using the above-mentioned medicaments, it should be rationally mixed and alternately used to prevent and delay the occurrence and development of pest and disease resistance. The above is the whole content brought by Huinong.com, and everyone is welcome to continue to pay attention to Huinong.com! phenibut hcl australia,phenibut hcl and acid,phenibut hcl adalah Shaanxi YXchuang Biotechnology Co., Ltd , https://www.peptide-nootropic.com
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