Amaranth high-yield planting technology [Figure]
Amaranth is native to China, India and Southeast Asia. It has been eaten as wild vegetables since ancient times. There are some high-quality and high-yield amaranth varieties in the south of China because of its strong resistance, easy growth, drought tolerance, moisture resistance and tolerance. High temperature, combined with the occurrence of pests and diseases, is gradually being recognized by people at home and abroad. Let's take a look at the high-yield planting techniques of amaranth!
Variety selection Amaranth planting should adopt different varieties according to the habits and consumption habits of different seasons. In winter and early spring, red leeks and red varieties with strong cold resistance are used. In other seasons, red leeks and whole green leeks with strong pest resistance are adopted.
Generally, from late February to late March, it is advisable to use early-maturing and cold-tolerant varieties of sharp-leaved red rice bran and sharp-leaved red glutinous rice. From early April to late May, red sorghum, Dahongpao, white rice bran, willow stalk, etc. should be selected. Varieties, from early June to early August, summer and autumn cultivation should use more heat-resistant white rice bran, willow carp, red glutinous rice and other varieties.
Cultivation time Amaranth can be cultivated from spring to autumn without frost. Open field cultivation can be planted from late March to early August, while greenhouse and small arch shed cultivation can be planted for 20 to 30 days early, that is, planting begins in late February, and It can be mentioned in the morning market for about 30 days. In addition to early spring cultivation, it is generally available for about 35 days after sowing.
Seeding technique
1. Soaking seeds and germination: Amaranth seeds are soaked in cold water for 24 hours, and need to be washed several times during soaking to facilitate water absorption. In the winter and early spring, the soaked seeds are taken out, washed with water, removed and drained, wrapped with gauze with good permeability, covered with a wet towel, and germinated at 15-20 °C. When 30 to 50% of the seeds are white, they can be sown. Other seasons are cultivated by direct sowing.
2, soil preparation: amaranth planting should choose less land plots, although the leek is not strict with soil requirements, but soil is loose, fertile, soil with good fertilizer and water retention, and amaranth prefers alkaline soil, 5,000 kg of decomposed organic fertilizer and 50 kg of 25% compound fertilizer per acre are applied, and intensive cultivation is carried out to make sorghum with a width of 1 to 1.2 m, a groove width of 0.3 m and a ditch depth of 0.15 to 0.2 m.
3, sowing method: the seeds of amaranth are small, sowing with some fine sand or fine soil can make uniform sowing, the amount of seed per acre is 0.25 ~ 0.5 kg. It can be spread or broadcasted in a flat manner. The four-toothed scorpion can be used for shallow or no sputum. The stalker can be slightly deeper in spring, shallower in summer, shallowly covered with soil, and then repressed to water, waiting for emergence. In the winter and early spring, a thin layer of straw is moisturized and covered with a layer of mulch. Cover the sunscreen in summer.
Field management
1. Temperature management: After the germination, the mulch and the covering are uncovered in the winter and early spring. After watering, a small arch shed is built in the greenhouse to facilitate the heat preservation. When the outside temperature is low, the grass is covered with a layer of grass in the evening. Curtain insulation. After the emergence of the summer, cover the sunscreen in time, take the early cover and expose it.
2, water management: amaranth in winter, early spring should always keep the soil moist, small water and water pouring, try to choose to water in the sunny morning, and after the seedlings, a 0.2% urea aqueous solution, after 7 to 10 days to pursue once Promote growth. Increase the amount of watering in the summer, usually in the morning and evening.
3, reasonable topdressing: amaranth to carry out multiple topdressing, generally in the seedlings have 2 true leaves when chasing the first fat, after 10 to 12 days to chase the second fertilizer, after each harvest 1 time topdressing 1 time. The type of fertilizer is mainly nitrogen fertilizer, and each time per mu, there can be 1500-2000 kg of thin human excrement urine and 5-10 kg of urea.
Pest control
1. Amaranth white rust: The main disease of amaranth is white rust. At the seedling stage, 75% chlorothalonil WP 1000 times or 77% Trik can be used to kill 1500 times liquid leaf spray prevention. Chemical control, but the same day after harvesting, you can not spray immediately, so as not to affect the quality of the goods.
2, stem-based rot disease: the implementation of crop rotation, in the case of the inability to carry out the crop, the harvest should be carefully cleared, collect the sick and burned, then plough the soil, disinfect the soil before planting (soil or spray liquid) ). It was found that the diseased plant was immediately removed, and the agent was used as a 40% solution of 40% triadimefon carbendazim wettable powder.
3, root knot nematode disease: in the critically ill area to remove the diseased body in time, can also be rotated with the Liliaceae vegetables or water and drought rotation. When planting or planting, apply 10% force granules in the ditch or hole, and apply 75 kg per hectare. During the growth period, the methyl isoflavone emulsion 200 times solution can also be used to irrigate the root 1 to 2 times.
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