High-yielding Cultivation Techniques of Dabaibai Radish
First, the appropriate sowing Live broadcast from the middle of May can be broadcast live in the open until late June. In this time of about 40 days, it is necessary to broadcast in batches in order to achieve successive listings. Second, the planting form White radish can be cultivated or ridged. If it is planted on sandy loam, the water supply is insufficient and should be sown. If the soil is viscous and the water conservancy conditions are good, it can be cultivated by ridging and planted on the ridge back, with each ridge being single-lined. III. Planting density According to the current market for individual size requirements, generally 0.75 to 1 kg is appropriate. In order to achieve high yields, density should be appropriately increased, and at the same time, the density should be higher, and the leaves should be sealed to cover each other, which can make the white radish skin lighter and more white and smooth, and improve the commercial quality. In order to achieve this effect, the line spacing is controlled at about 40 cm, the plant spacing is 25 cm, or the row spacing is 30 cm, and the density is 6500 to 7000 per mu. Fourth, sowing method Whether it is seeded or planted on ridge backs, seeds can be planted at a predetermined spacing, one for each hole, and the depth of cover soil should be shallow and suitable for 0.5 centimeters, and then watered, when the temperature is low, two full-water seedlings When the temperature is high, the whole water is seedlings. You can also take a good look first, and then broadcast it again. Dig holes, water, and seeds. Which kind of sowing method to adopt can be adapted to local conditions and be flexible. The general principle is to sow one seed and one seedling at a time. V. Field Management 1. Cultivated grass. Seedlings should be cultivated 2 to 3 times during the period from the seedlings, loosen the soil, increase the temperature and protect the soil, promote the roots and shoots, and cultivate strong seedlings. At the same time eliminate field weeds and lay a good base for later high-yield production. Do not hurt the leaves and roots during cultivating. 2. Fertilize and water. The general principle is based on basal fertilizer supplemented by top dressing. Due to the higher density of white radish planting and the deeper rooting of the radish, it can fully utilize the nutrients in the soil. Therefore, 50 kg of ternary compound fertilizer and 40 kilos of urea should be applied per acre before cultivating the arable land. It would be better if farmyard fertiliser is applied. Then plowing till the plough layer evenly distributes various nutrient elements. When white radish enters into the early stage of fleshy root enlargement and forms a finger, apply 20 kg urea and 20 kg compound fertilizer per acre and evenly spread it on the surface of the ridge, 10 to 15 cm away from the root of white radish, and do not spread the fertilizer on the leaves. on. It's best to sprinkle in the afternoon, then water it. White radish is stronger than Chinese cabbage because its roots are deeper and can absorb deeper soil moisture, but white radish itself requires good soil water supply. In order to prevent radish from cracking roots and boring and achieve high yield and high quality, it should be kept dry and wet when entering the rosette stage, and should be watered in case of drought, especially during the period of meat root swelling. If natural precipitation is more, make up 1 or 2 times; if there is less precipitation and no regularity, then it should be poured 3 to 4 times. 3. Disease prevention and pest control. Soft rot disease: also known as rotten gourd, water rot, etc., mostly in the period of fleshy root enlargement, early wilting of plant leaves, recoverable sooner or later, when the base of the petiole completely rots, showing yellow-brown viscous, giving out Odor. The disease is a bacterial disease that spreads through the flow of rain or water, and is susceptible to disease under conditions of high temperature, high humidity, and lack of light. Control methods: In the radish roots into the expansion period should be sprayed 2 to 3 times agricultural streptomycin or neomycin and other fungicides. White spot disease: This disease is a fungal disease. It mainly damages the leaves. At the beginning of the disease, there are small gray-brown spots scattered on the leaves. After that, it gradually expands into a circle, the center turns to gray, and later lesions merge into each other to form an irregular large scale. Disease spots. The disease occurs throughout the growing season, and high temperatures and droughts are the main causes. Control methods: In the growth period of white radish, spraying carbendazim or Mancozeb and other agents. Yellow striped jumper: Also called "soil flea", the main manifestation is that the adults bite the cotyledons, and the young leaves are tender and young when they emerge, and they are bitten into missing or missing leaves, affecting the whole seedlings. Control methods: Immediately after emergence, beetle beetles are sprayed with net or rapid extinguishment and phoxim. Golden worms: mainly larvae, yellow larvae, fleshy roots, loss of commercial value. Control methods: Use phoxim granules or trichlorfon powder to root 2 or 3 times. Ground tiger: also known as silkworm, larvae damage, bite the heart and leaves before the 3rd instar, 3rd in the earth after eating bite the root, resulting in lack of seedlings broken ridge. Control methods: with the golden needle. 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