Management technology of plum tree flower and fruit

Plum tree has a large number of flowers, but the self-flowering seed-setting rate is low. In order to achieve stable and high yield, flower and fruit management is an important part of plum tree, which is mainly reflected in pollination, flower and fruit thinning, flower and fruit protection and so on. First, the most suitable time for pollination is in the early stage of flowering. The flowers that bloom for less than 3 days should be pollinated, and the flowers that bloom for more than 4 days have no good pollination effect. The sign of suitable pollination for flowers is that the stamen anther is still partially uncleaved, the pistil style is fresh, and the stigma has mucus. Collect the flower buds whose petals are loose but not yet open to collect anthers and pollen, and configure the pollen solution to be sprayed for pollination. Pay attention to the choice of windless weather and uniform spraying. Second, in the production of flower and fruit protection, growth regulators and nutrient elements are usually sprayed to promote the elongation of pollen tube and fruit setting. Spraying 20 mg / L gibberellin at flowering stage, spraying 0.2% potassium dihydrogen phosphate and 2mae4murD mixture 20 mg / kg at flowering stage, and spraying 0.2% potassium dihydrogen phosphate + 2mae 4murD mixture solution 20 mg / kg at flowering stage can increase the yield of plum trees.