The kidney bean is a self-pollination plant, and the cross-pollination is only 0.2% to l%. In order to maintain the purity of the fine variety, different varieties should be spaced more than 100 meters apart. Dwarf species should choose to leave the middle fruit of the strong and disease-free plants for seeding. The vine species should be selected to retain the base and middle part of the plant, that is, the pods below the vine 1/3 height; the pods in the upper part of the plant are not full of seeds and should not be selected for retention. In addition to the seedlings except the species, the rest of the nurses should be removed. The seed development of kidney bean is completed approximately 25 to 30 days after flowering. When the pod turns from greenish yellow to yellow, when the twists and turns do not break easily, it is matured and harvested in time. Seeds for spring sowing can be harvested in spring last year or in autumn, but better in autumn last year. Because of the autumn seeding, the seeds are full and full, the germination rate is high, and the emergence is also neat. The germination rate of seeds can generally be maintained for 3 years, but the seeds harvested in the previous year are mostly used in production. Piezoelectric System Scaler,Dental Piezo Scaler,Dental Piezosurgery Scaler,Piezo System Scaler Rolence Enterprise Inc. , https://www.rolencedent.com