1, land preparation and fertilization: planting sweet beans as far as possible, do not crop with legumes, generally 3-4 years of crop rotation. Before sowing, the ground should be y turned, combined with autumn plowing, 667 m 2 of high-quality rotting organic fertilizer more than 3-5 square, 25 kg of calcium superphosphate, 15-20 kg of ammonium sulfate, 15-20 kg of potassium sulfate, the above fertilizers are fully mixed and then applied. After the soil thawed in the spring, plowing and harrowing to prepare the ground, if the soil moisture is insufficient, the ground should be burned first, and then the ground should be prepared and the bed should be made, in order to ensure that the moisture required for the emergence of seedlings after sowing. Planting is done in single rows, so that the field is well ventilated and light-permeable, and the pods are brightly colored. When making beds, single rows are 100-110 centimeters apart and no more than 15 centimeters high.

2, sowing: choose seed full, no disease or insect bite of the seed, in mid to late March (March 15-25) sowing. Hole spacing 13-15 cm, hole depth of 3 cm, each hole sweet beans 2-3, with a seed amount of 3-3.5 kg / 667 m 2; Dutch beans 3-4, with a seed amount of 5 kg / 667 m 2. If the soil is dry, to water spot sowing, mulch thickness of 2-3 cm, sowing can be compressed.

3, field management: seedling stage. Generally more tolerant of drought, less water demand, watering 1-2 times as appropriate; such as insufficient bottom fertilizer, seedling weak, can be applied a small amount of nitrogen fertilizer, 667 m 2 urea 15-20 kg. Into the flowering and fruiting period, the amount of water and fertilizer needs to increase, can not lack of water, should often keep the soil moist state. In the event of heavy rain to timely drainage, so as not to rot the roots. In this period, according to the actual situation, the pursuit of 1-2 times of nitrogen fertilizer, combined with medicine and then sprayed with potassium dihydrogen phosphate 1-2 times, in order to improve the yield and quality.

4, insert shelf: when the seedlings grow to 20-30 cm, it is timely to insert shelf. Shelf height to ensure that more than 2 meters, frame material selection of thick bamboo poles or wooden poles, every 2-3 meters into a, and then with the growth of the vine across the net line on the lead, so that the vine upward climbing growth, to maintain the ventilation between the rows of light, so that the normal growth and development of sweet peas. Note that the frame must be inserted solid, during the growth period can not be inverted frame.

5, harvesting: my county sweet peas harvesting start at the end of May - early June. Harvesting standards. Generally 12-15 days after flowering, the young pod elongation stops, and the seeds have just begun to develop, the pod was half-drum, bright green color, this time should be harvested in time. The harvest must be picked clean, otherwise it will affect the growth of the upper side of the young pods.