Autumn planting techniques are named autumn, originating in china and japan. It's warm and humid, and it's suny, it's cold, it's cold, it's cold, it's cold, it's cold, it's cold, it's cold, it's cold, it's cold, it's cold, it's cold, it's cold, it's cold, it's cold, it's cold, it's cold, it's cold, it's cold, it's cold, it's cold, it's cold, it's cold, it's cold, it's cold, it's cold, it's cold, it's cold, it's cold, it's cold, it's cold, it's cold, it's cold, it's dry, and it's good to grow in sand. Autumn accelerants warm and warm, heat-resistant, not only require long periods of light, acupuncture is drought-resistant, damp-resistant, water-resistant, and acupunctures are highly adaptable to the soil, but it is appropriate to have deep, fertile and loose ground, and to keep water from the fertile or sandy soil. (1) seeding and seeding: autumn sunflowers are suitable for planting on deep, loose and fertile plots. The whole place is covered with base fat. Usually 2,000 kg of dirt dung per acre, 100 kg of cake fat. In late march to mid-april, seedlings are normally planted in sunshields or solar greenhouses. The seedbed soil is distributed at a density of 10 centimetres by scale of garden soil, decomposed organic fertilizer and fine sand at 6:3:1. Because the autumn shell is strong, it should be immersed 24 hours before sowing, followed by seeding at 25-30°c, 4 to 5 days of sprouts, 30 to 40 days of sapling, or 3 to 4 leaves. It is usually broadcast in the first half of april through the middle of may, and is made of 1 metre wide, with a density of 50 centimetres and 2-3 seed grains per den. The membrane cover can be broadcast 4-6 days early. When they grow two leaves, they make one sapling in each den, four to five leaves. (2) field management: autumn roots are well developed and absorbent. When a plant is 40-50 centimetres high, it should be fertilized one time in the ring, combining the cultivation of soil. Follow urea per acre after the one or two fruit. In the later stages of growth, in order to prevent early decay, a 0. 3% leaf spray of potassium phosphate solution can be carried out, one in five to seven days, two to three in a row. Autumn is more drought-resistant, with less water for the seeding season, proper tillage before flowering, and promotion of root stretching. Water is watered at any time during the noon drought, and in the summer, be careful to keep its face wet, usually 7 to 10 days a day. Water is watered as appropriate in the later stages of growth. The rainy season is full of water, the temperature is high, it can easily lead to the root of the water being laid, and it has to clear the tarp in time. Autumn is based on the result of the chicken, and should be removed in time to reduce nutrient losses. And when you start picking fruit, you get the basic leaves, so you can get the ventilation, and you can reduce the disease. In the rainy season, it is important to watch over the ground and prevent the planting of plants. (3) pest and pest control: autumn pests are relatively small and occasionally endangered by aphids, worms and tigers. (a) combat aphids and worms, killing 3,000 times the fluid by 2. 5% enemy, or 80% dichlorvos emulsion 2,500 times the fluid spray; in the middle of the rainy season, there are more signs of disease in the branches, and it is possible to spread lime around the plant base in time to prevent the spread of the disease。
