Originating in western India, Central America, and the Caribbean, Conker has more than 1,500 years of cultivation history in China. Its capsules are rich in protein, and have blood circulation, kidney, stinging and other effects. Nen can be used for vegetables, fried foods, pickled are suitable; dried beans can be cooked. First, characteristics. The bean is a cultivated subspecies of the Leguminosae family, an annual herb. Its roots are well developed, strong growth potential, nodules, and nitrogen fixation. Stems stout, erect or creeping. Three compound leaves, alternate, petiole long, lobular broad oval. Butterfly flower, reddish or lavender, racemose, axillary. The capsule is narrow and rectangular, 10-35 cm long. Seeds kidney-shaped, red or brown. Asparagus thermophilic heat-resistant, seed germination temperature 25-30 °C, plant growth optimum temperature 20-25 °C, flowering results suitable temperature 23-28 °C. Hi glare and lack of light affect flowering and scarring. Adaptable to the soil, suitable for sandy soil with deep and fertile soil. Second, the main varieties. There are two kinds: First, creeping beans. Strong growth potential, thick vines, 2-4 meters long, long growth period, late maturity. The mature pods are about 30 cm long and 4-5 cm wide, and each weigh about 150 grams. The seeds are big and the grain weight is about 1320 grams. The current cultivation is mostly creeping beans. The second is short beans. Stems erect, plant height about 1 meter. Leaves, pods, seeds are small, mature pods 10-20 cm long. Ripeness is earlier, but yield is lower and less cultivated. Third, the cultivation techniques 1, soil preparation. Choose a deep, well-drained, well-ventilated plot, deep-seed the frozen alfalfa, and after the spring, plow the ground and make the alfalfa. The alfalfa is 130-150 cm wide. Combining soil preparation and ample fertilization of 2,500 kg of farmyard fertilizer per acre as base fertilizer. 2, sowing nursery and planting. After the final frost, you can sow. The distance between the points is 0.8 meters and 0.5 meters, 2-3 seeds per hole, depth 5 cm. After sowing, it can be covered with plastic film to increase the temperature and promote germination. When the seedlings ruptured in time, the bean sprouts were drawn and the membrane eyes were plugged. About 15 days after sowing, seedlings emerge. The bean seeds are not easy to germinate and it is best to carry out seedling transplants. 3, field management. (1) fertilizer and water management. Keep the soil moist before emergence, but the moisture is not too much to prevent bad seeds. Water should be controlled before flowering. After flowering and scabbing, the amount of irrigation should be increased. In particular, when the larvae reach 3-4 cm in length, sufficient water supply is required. After the seedlings were top-dressed in stages, the plants were chased the first time when they had four true leaves. After sitting, the water was chased for the second time in combination with watering, and the top-dressing stage was followed by dressing 1-2 times. Nitrogen, phosphorus and potassium fertilizers should be applied and nitrogen fertilizer should be added appropriately. (2) cultivating earth. Cultivate 2-3 times before flowering, in order to increase the temperature and protect the earth. Combine cultivator to remove field weeds and properly cultivate soil. (3) Plant adjustments. When the main vine is 50 centimeters long, the vine is introduced. During the flowering and podling stage, proper removal of side vines or picking up the leaves and sparse leaves will help increase the rate of scarring. (4) Pest control. The main pests of jack bean are aphids and cardamom, which can be controlled by physical methods such as yellow board trapping and light moth trapping. If necessary, they can be controlled by imidacloprid, anti-Taipo and other agents. The main diseases include rust, powdery mildew, etc. The agricultural control measures such as rotation and reasonable close planting can be effectively controlled, or sprayed with lime sulfur, triadimefon and other agents. (5) Harvesting and Seeding. The harvest time is 10 to 20 centimeters in length, and it is harvested in midsummer until harvested in early summer. Generally 500-750 kilograms can be used per mu. Plants with early pods and cultivars should be selected as the seedlings, and the pods at the base should be selected as seed fruits. After ripening, the pods should be dried and stripped and stored.