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Autumn vegetable management technology
The end of the rainy season in mid-August is an important period for the growth of vegetables in the fall. The field management should be strengthened. First, the carrot field management techniques 1, thinning, cultivator, weeding: 1 - 2 true leaves when the first seedlings, spacing 3 cm. Then shallow, weeding, and promote seedling growth. The second time the seedlings were 3-4 seedlings when they had 3- to 4-leaf leaves, the seedling spacing was 10 cm for medium and small cultivars, and 13-15 cm for large cultivars, and a second cultivator was conducted. 2. Irrigation and fertilization: After the seedling stage, the post-harvest control is promoted. After the “fixed puerperium stageâ€, when the rough root of the fleshy root is approximately equal to the finger, it is the period when the fleshy root grows fastest. Watering should be done in time to keep the soil constantly. Wet, stop water for the first half of the harvest. Carrot dressing can be applied to more effective fertilizers, such as ammonium bicarbonate, ammonium sulfate, urea, etc., generally top dressing 2 - 3 times. In the "fixed time," the first time after the Fertilizer, the second time after half a month, applying fertilizer, apply ammonium sulfate 10 - 15 kg per acre, appropriate with the application of potash fertilizer, the third time after another 15 - 20 days, top dressing, Use slightly less than the first two. Second, field management of scallions: Center of lush green onion management center is to promote root, strong trees and soil softening, to strengthen the management of fertilizer and water, to create a suitable environmental conditions for light blue, improve the production and quality of green onions. 1. Watering: After scallions are planted, enter the summer season. At this time, the management center is to promote roots. Watering should be controlled, and the water should be drained after the rain to prevent rot, yellow leaves and dead seedlings. At the same time, the cultivator should be strengthened to promote root growth. . Between the beginning of the autumn and the White Dew Festival, the principles of pouring, watering in the morning and evening should be mastered. After the white dew, green onions enter the growth stage. The principle of ground pouring and heavy pouring should be mastered in irrigation, and water should be poured every 4-6 days. After the frost falls, the temperature drops, the onion basically grows, the water requirement decreases, and the soil is kept moist. Stop watering 5-7 days before harvest to facilitate harvesting. 2, top dressing: Welsh onion basis in the application of base fertilizer but also phase fertilizer. After the beginning of autumn, when the growth of plants is accelerated, topdressing "foliar manure" is applied, and 1500-2000 kilograms of farmyard manure per acre is applied and 20-25 kilograms of superphosphate is promoted to promote leaf growth. After the White Dew Festival, it enters the period of vigorous growth of scallions, which is the key period for the formation of welsh onion yield. It should be combined with watering to top up the "seizure of tree fertilization" 2 times, each time mus of 15-20 kilograms of urea and 10-15 kilograms of potassium sulphate. Sprinkle between rows, water after shallow cultivator. 3. Earthing: Earthing is an important measure to soften leaf sheaths, prevent lodging, and increase light blue yield and quality. From the autumn festival to the harvest, generally three times of soil cultivation, the former two combined with cultivator, the ridge into the onion ditch, filling the ditch at the end of summer; the height of each cultivating scallion, should be based on the height of pseudostem growth, each time 3-4 cm, the soil should be cultured to the leaf outlet at the top of the blade, and the heart must not be buried to prevent the leaves from rot.