After the fall of greenhouses, beans are generally sown in early August and are now in a period of vigorous growth. The vegetable growers must grasp various aspects of management to obtain high yields. First, cover pest network In the late autumn cultivation of beans, tapeworms and pods are the main pests in production, and they must be highly valued. They must be isolated by insect nets, and the density of insect nets should not be less than 30 mesh. After covering the net, imidacloprid was sprayed once. Second, fertilizer and water management The root system of the bean is well developed, it has strong water-absorption capacity, and it has a small transpiration, so it is more resistant to drought. The general principle of the management of the fertilizer and water in beans is: light and heavy. Prevention of procreation in the early stage, prevent premature aging in the later period. Before flowering and poding, there is not much demand for fertilizers from beans. If there is too much water in the vines, the vine leaves will be prolonged, the nodes of the first inflorescence will increase, the side vines will increase, the inflorescence will decrease, and the bottom pods will decrease. low. Fertilizer should be properly controlled to promote reproductive growth, in order to facilitate the formation of more inflorescences. During the flowering and pod stage, the amount of fertilizer required for the beans is large, and sufficient water and fertilizer should be poured to promote flower protection. When the middle part of the vine has been flowered and the length of the bottom larvae has reached about 10 cm, apply heavy fertilizer once. Apply 10-15 kilograms of fertilization per acre and furrow water after sunny afternoon. Harvest period, from the first harvest, apply fertilizer once every 7 days or so, and apply 2 times in order to promote side vines and flowering and scarring to prevent premature aging. Every 10 to 15 kilograms of fertilization per acre will be applied to the irrigation of the water, mainly to furrow, and then the fertilizer will be applied according to the growth situation. As the requirements of the beans on fertilizer are the most phosphorus fertilizer, followed by potassium fertilizer, nitrogen fertilizer is the least, so in addition to the need to supplement a certain amount of nitrogen fertilizer in the seedling stage root nodule is not fully developed, phosphorus and potash fertilizer are the main requirements in the flowering and podging period, especially Increase the amount of phosphate fertilizer, and promote the activity of rhizobia, so that plants grow robustly, flowering more, and scabs are enriched. Third, the stent lead When the seedling height reaches 30 centimeters or so, the internodes begin to elongate and enter the pumping vine. At this time, they should be racked in time and generally be used as an adult frame. Insert a bamboo pole in each hole, the bracket should not be too long, so as not to affect the postpones. The brackets can be tied into one for every two or four roots, and a horizontal bamboo pole is added to the top to stabilize it. After the scaffolding, the vines should be often introduced. The introduction of vines is usually performed after 10:00 am to prevent sprains. The vines of cowpea are twisted counterclockwise, and they should be counter-clockwise when they are introduced. When introducing vines, be careful to cut off all side vines with a height below 30 cm to increase the rate of nymphs. Pay attention not to vines on rainy days so as to avoid causing wounds and causing diseases. Fourth, topping When the main vine reaches the top of the bamboo frame and has turned back about 30 centimeters long, the top should be cut off in time to prevent the racks from intertwining and affecting the ventilation and light transmission. Through topping, vegetative growth can be effectively controlled, flower bud differentiation at the lower nodes can be promoted, flowering number can be increased, and the rate of scarring can be increased. Five, buckle shed insulation The greenhouse membrane is generally covered before October. After the film is covered, if it is sunny, the two sides of the greenhouse are opened during the day and covered at night. If it is rainy, it will not open film during the day and night. To ensure the daytime temperature is about 30 °C, the night temperature is 20 °C -25 °C. Qingdao Beautiful Skin Biotechnology Co., Ltd , https://www.hafilleresthetic.com