The beans are too warm to frost, and the suitable temperature for growth is 18-20 °C. The optimum temperature for flowering and sprouting is 18-25 °C. 0 °C is frost damage. The 2-3 °C low temperature leaves lose green color temporarily, but the temperature rises to 15 °C. After 2-3 days, it can still return to normal. Plants grow poorly below 10°C, and falling above 32°C can easily cause falling flowers. The kidney bean requires strong light, and the varieties are insensitive to the length of sunshine. According to the above characteristics, the following points should be noted when growing beans in winter greenhouses: 1. Choosing good varieties: The selection of improved varieties is the first condition for winning high yields in greenhouses. Greenhouses should be the first choice for "newly selected eight inches." "Green Dragon", the two varieties of plants grow robustly, green, flat strips, high yield, yields up to 3000 kilograms, suitable for planting in protected areas. 2. Soil preparation and fertilization: Fine soil preparation and deep base fertilizer are the basis for strong bean sprouts and high yields. Mushi completely decomposed organic fertilizer 2-3, ternary compound fertilizer or 25-35 kg of diammonium phosphate. Made into a north-south to flat, wide 1.25-1.3 meters. 3. Reasonable planting density: Fertilizer in the greenhouse is relatively full, plant growth is more prosperous, but the light is weak, the planting density should be thinner than the open field, each row of two rows, spacing 28-30 cm, planting two plants per hole, 680O per acre - 7300 strains. 4. Scientific management: Generally speaking, kidney beans should be broadcast live. Watering before sowing should not be too much. Wetness should be avoided, and ground temperature should be avoided as much as possible. Immediately after sowing, cover the mulch to improve ground temperature and promote early germination of kidney bean. Otherwise, it is easy to cause bad species. After emergence, the seedlings were removed from the mulch in time and the roots were covered with soil. Management at this time to promote the root seedlings, greenhouse temperature maintained at about 15 °C. Before throwing vines, try not to water, mainly to cultivator. After throwing vines, the ropes should be placed in a timely manner to prevent stems and vines from intertwining. In this period, watering is still controlled properly. The principle is “watering and wateringâ€. After the bean enters the flowering stage, it needs a lot of nutrients and moisture. To achieve high yield, the plant must have good nutritional status. After the nursery is done, combine the first water with 10-15 kilograms of urea per acre. Afterwards, each time harvested, tender for one time, chase one time high-quality quick-acting chemical fertilizer, ternary compound fertilizer or diammonium phosphate, conditionally top-up potassium dihydrogen phosphate, 15-25 kilograms per mu, or alternate with mature human feces and urine. get on. 5. Shelter temperature management: greenhouses with high temperatures, high humidity, strong plants grow, often young leaves are not resistant to sun exposure, continuous cloudy days, pull the shed, put the shed must be the same as usual, or once sunny, once the wind, the leaves will Burns have occurred. Therefore, we must pay special attention to the management of rainy days and greenhouses before we receive good results. 6. Pest Control: Botrytis cinerea: Leaves, flowers, and fruits that damage the bean. The vines and the diseased surfaces produce gray hair layers. The optimum temperature for onset is 13-21°C, and the optimum spores are 21-23°C. Control methods: Use 100-1500 times spray with quick-acting, acetaminophen, and Nongliling, remove the diseased leaves and diseased fruits, and bring them out of the shed for destruction. Rust: The main damage to the leaves, the early onset of the leaf back produces a small yellow spot, after the rust brown, uplift was a small pustule lesions, brown powder after the rupture. Control methods: Initial use of 200-300 times sulphur suspension or polysulfide suspension spray, the powder must clear 30-40 kg per bag of small spray. Bacterial diseases: Leaf disease begins to fade from the tips of the leaves or leaves, or appears as small, oily spots, irregularly shaped, with yellow halos. Control method: Use 50% of the enemy to use 0.3% of the enemy seed pine seed dressing seed; disease first shot 1OOO-2000 times 72% of agricultural streptomycin sulfate or neomycin, 300 times of colostrum copper irrigation roots, 7-10 days 1, 2 consecutive times. Tea sorghum: Occurs at the top of the kidney bean leaves, there is a center of occurrence, and then gradually spread. Severe leaves are oily or oily, and the edges of the leaves are curled downwards; the young fruit is red-brown. Control methods: Spray the broom net 2O00 times liquid 1-2 times in a timely manner.
Pinball Machine Kit,Medical Machine Kit,Cnc Machine Kit
Rongtian Import & Export Co., Ltd. , http://www.ywtattoomachine.com