planting place: sweet beans are native to southern Europe and Mediterranean coastal areas and have high nutritional value. It belongs to high-grade fine vegetables and is widely planted in European and American countries and southern provinces and cities such as Guangdong, Guangxi, Sichuan and Yunnan. Planting time: sweet beans are planted from March 15-25 in spring to early July in summer, which is more suitable for open cultivation.

growth cycle of sweet beans

the whole growth period of sweet beans is about 1-12 days, including seedling stage, flower bud differentiation stage, flowering stage, pod filling stage and maturity stage. Sweet beans can be divided into big pods and small pods. It is a semi-cold-tolerant vegetable, which likes cold and is afraid of heat. Growth temperature: The optimum temperature of sweet bean seeds is between 16 and 18. Once the temperature is higher than 25℃, the germination rate will decrease and the seedling stage can adapt to the low temperature. The optimum temperature is 15-18 florescence and 18-2 maturity. When the temperature exceeds 26℃, the quality and yield will decrease < P > Key points of sweet bean planting technology

1. Soil preparation and fertilization: try not to plant sweet beans with bean crops continuously. Generally, the rotation is 3-4 years. Deep ploughing should be combined with autumn ploughing before sowing. 667m2 of high-quality decomposed organic fertilizer, 25kg of calcium superphosphate, 15-2kg of ammonium sulfate and 15-2kg of potassium sulfate should be applied. These fertilizers need to be thoroughly mixed before application. 2. Sowing: Choose sweet bean seeds with full seeds and no insect bite, and sow in the middle and late March, with the hole distance of 13-15cm and the hole depth of 3cm, with 2-3 sweet beans per hole. 3. Field management: sweet beans are generally drought-tolerant at seedling stage and need less water, so they can be watered for 1~2 times as appropriate. If the base fertilizer is insufficient and the seedlings are weak, a small amount of nitrogen fertilizer can be applied, and 15-2kg of urea can be applied to 667m2. When they enter the flowering and fruiting stage, the demand for water and fertilizer will increase, and the soil should be kept moist. 4. Check: When the seedlings of sweet beans grow to about 2cm, check them in time. Shelf height should be more than 2 meters. The shelf material should be thick bamboo or wooden poles, and one should be inserted every 2-3m. Then, as the vines grow, they should be pulled through the net, so that the vines can climb up and keep rows of ventilation and transparency, so that the sweet beans can grow and develop normally.