The invention discloses a method for increasing the yield of
mass crossing seeds of sweet potatoes. The method comprises the following steps: (1) selection of a seed production base; (2) selection ofseed production parents; (3)
transplanting and management after planting; (4)
roguing and diseased
branch removing; (5)
topping and
grafting; (6) harvesting of seeds; (7)
drying and storage of the seeds. The method disclosed by the invention has the following beneficial effects that: 1, an isolation zone is arranged, so that the possibility of crossing of other non-target parents is avoided, and the seed
production quality is increased; 2, just one kind of sweet potatoes are planted, so that the probability that generations pass through identification is increased; 3, the spreading risk of
plant diseases and
insect pests of the sweet potatoes is reduced to the maximum through isolated
seed testing and epidemic situation detection, and the spreading of the
plant diseases and
insect pests ofthe sweet potatoes is effectively avoided; 4,by removing main stems, more side stems are obtained, the blossom quantity is increased, and the fruiting rate is ensured; 5, honey plants are planted atthe periphery and the middle part of a seed production field, so that bees can be favorably attracted to carry out
pollination, and the seed production yield can be increased. According to the methodfor increasing the yield of the
mass crossing seeds of the sweet potatoes, disclosed by the invention, the foundation is laid for new variety breeding of sweet potatoes.