Green beans are a common vegetable on our table and are very popular among you. The green beans can be planted in spring and autumn, but now it is the cultivation period of green beans. How to grow green beans? What should we pay attention to when planting green beans? Let's talk about the planting techniques of green beans. First, the choice of variety Planting green beans in early spring requires selection of varieties that are resistant to cold, disease-resistant, high-yield, and of good quality. Second, the choice of soil Green beans do not require high soil, no matter the loam and sand can grow well, as long as the well-filled fields can be planted, but the fertile soil can be produced with high yield. Third, seedling technology 1. Green beans are strong in cold resistance and do not need high temperature. (The temperature above 25 °C has an effect on the differentiation of flower buds.) Therefore, the cultivation of green beans is generally carried out in greenhouses. (1) Seedling time. Small shed planting can be planted around February 10. (2) The whole car. Firstly, the seedbed is made thin, and the carcass is 1.2 meters wide and 20 cm deep. The length of the car can be determined according to the amount of seeding. Pour the bottom of the water, then smooth the surface with a sand board, use a nylon rope to make a 9 cm wide line, then cut into a 9 cm × 9 cm square with a knife, pick a 1-2 in the middle of the square with a knife A centimeter deep nest. 2, sowing (1) Seedling: Seed 4 seeds in a square nest and cover with a fine soil. Fields with underground pests can use 1000 times solution of phoxim when watering. After doing a good job, lay a layer of mulch on the top and cover the shed. After the seedlings break the soil, the mulch can be removed. If there is a sun, the shed can be uncovered. When the seedlings grow to 2 true leaves, they can be planted in the shed (no sheds, only the mulch can be planted and transplanted 10 days later). (2) Live broadcast: Green beans can also be broadcast live in Daejeon, but the planting time should be postponed until February 25. The fertile field will be opened 1.4 meters, according to the nest distance of 35 cm -40 cm, two lines per pod (20 cm from the side of the box), 4 seeds per nest, and then covered with dirt. After the sowing, the mulch film is laid on the top, and the mud is pressed around. After the seedlings are unearthed, the seedlings are smashed to the mouth and the seedlings are taken out. If the soil is dry, you can first dig the nest, pour the water, and then sow the seeds before they are dried. Fourth, field management 1. Management of seedling stage: management after the emergence of the seedlings to the general period before flowering. After transplanting and planting, the root water should be poured once, and the water volume should be small and should not be large. The live bean is not watered after sowing. Especially in the early spring and low temperature season, watering is easy to cause rotten seeds. However, there are often phenomena such as lack of seedlings and abnormal growth of seedlings. Therefore, it is an important measure to manage seedlings by selecting strong seedlings and timely use of reserve seedlings. Generally, 2 to 3 seedlings per hole should be ensured. Under suitable environmental conditions, the bean is slightly exposed from the sowing to the first pair of true leaves (basal leaves), which takes about 10 days. At this time, the energy source of seedling growth depends mainly on the nutrients stored in the cotyledons. And rapidly expand the leaf area to play a photosynthesis function, when the seedlings live independently, the cotyledons will shrink, wither and fall off. In the case of the organic base fertilizer, the basal leaves grow fast and the cotyledons fall off earlier. The bean buds begin to differentiate in the seedling stage. The dwarf species are about 20 to 25 days after sowing, and the vine species are about 25 days. At the same time of flower bud differentiation, the vegetative growth of the plant is accelerated, and the topdressing is applied in time, especially the nitrogen fertilizer. The number of flower buds will increase, and the branching nodes will be reduced. The flower bud differentiation of the lateral branches and main branches of the dwarf species will be carried out almost simultaneously, and the effect of early application of topdressing is more significant, but the use of excessive nitrogen fertilizer or partial application of nitrogen fertilizer during the seedling stage will make the plant The stems and leaves are soft and tender, and they are also susceptible to pests and diseases. When the compound leaves appear in the live broadcast, the first top dressing is applied. The seedling transplanting is applied for the first time after 3 to 4 days of planting, so that the seedlings can resume growth and then the top dressing 2 3 times, in the vining should vine species, scaffolding before dressing, the amount of fertilizer per acre of 20% to 30% lean rot manure with about 1500 kg of superphosphate and potassium sulfate is preferably added each 2.5 kg 2, top dressing in the pod period. The absorption of nitrogen, phosphorus and potassium in the beans increased with the order of flowering and pod-forming at the seedling stage and the harvesting period of the tender pods. The dwarf species had larger fertilizers and more fertilization times. In actual fertilizer should also consider the relationship between nitrogen-fixing Rhizobium different growth stages to the ability of the kidney bean, early flowering bean pod, there are formed a large number of nodules, nitrogen fixation strongest, such excessive nitrogen fertilizers, anti will Due to the inert action of Rhizobium, the amount of nitrogen used is relatively reduced, and the nitrogen nutrition of the plant is not improved much. It is best to reapply the top dressing during the flowering and pod-forming period to meet the needs of rapid growth of the fruit pod. The application rate is 50% per mu. The human and animal excrement is about 2500-5000 kg, and should be added with 15 kg of superphosphate to dry and water, and the ground is wet and stirred to open the hole. The application times are 1 to 3 times, and the pods are short. after no longer topdressing. The bean pods have a long pod period, and the growth and pod formation in the rear view should be properly applied 2 to 3 times. In the flowering and pod-forming period, the top dressing is 0.3% potassium dihydrogen phosphate plus 0.2% urea, and the leaf surface is sprayed 2 to 3 times, which has a significant yield increasing effect. In the flowering and pod-forming period, the soil should be kept moist at all times. It should be irrigated more, but it should also prevent excessive water, and the plants grow too prosperous, causing vegetative growth and reproductive growth disorders, causing the flowers to fall into the pods, and rainy weather should be done well to reach the rain. only dry field. V. harvest The beans that are eaten as tender pods can be harvested about 8-10 days after flowering. They should be harvested once a day, which can ensure the quality and commerciality of the pods, and reduce the excessive consumption of nutrients in the plants. Pods, thereby increasing the rate of sitting pods and commodities. About Xiaodou Bean Planting Management Technology Xiaobian introduced this to everyone. The green beans are not cold and not resistant to freezing, so everyone should pay attention to temperature control when planting green beans. It can prevent some medicine or blood from splashing on the face, thus protecting the eyes. This kind of glasses is generally used in conjunction with masks and surgical caps to fully protect the doctor's head.
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