Pear tree low yield solution

Pear tree low yield solution

Pear trees have no or less flower buds and cannot result in the following main reasons: 1 When pear trees enter the ageing period, with the increase in the degree of aging, the stem branches begin to die, the crowns are incomplete, and the short fruit branches are chicken-like. Although they can produce flowers, their quality is poor. , resulting in the loss of the ability to produce results; 2 inadequate nutrients, unfavorable external conditions, and the disruption of bud development. Solution: Under the premise of strengthening the management of soil and fertilizer water, adopt aggravating pruning measures to carry out major updates and re-establish the canopy, so that it can be updated in time to prolong the result period. Adequate nutrition is the material basis for the formation of flower buds. It is the primary condition for the buds to have rich carbohydrates, mineral nutrition, and nitrogenous substances. Sufficient light, proper temperature and moisture supply have a significant effect on flower bud formation. If the illumination inside the canopy is lower than 30% of the natural light, the leaves will fade, the growth will be weak, and even the flower buds will not form. The unreasonable planting density or crown structure is an important reason for the poor illumination inside the canopy, poor development of branches and leaves, declining fruit quality, and low yield and instability. Therefore, reasonable density should be selected in the production, and a good tree structure should be established by pruning, and the tree height should be limited within a certain range. Commonly used in the production of flower promotion measures are: 1 shoot tipped long-term top-dressing new shoots before the long stop 0.2~0.3% urea + 0.2 ~ 0.3% potassium dihydrogen phosphate foliar top dressing 5 ~ 7 times, and in the new shoot stop long-term soil Application of quick fertilizer; 2 light cut slow release and promotion of flowers under the premise of ensuring light penetration, the implementation of light shear and more branches and long branches slowly put, appropriate increase in the number of leaves and short branches, to create conditions for the formation of flower buds. Tests have shown that 35 to 130 cm long annual branches are slowly released. In the year, 20% of the middle and short branches can form flower buds. 3 Pulling branches to promote the flowers to promote branching on the basis of light shear and slow release, and to increase the angle of the branches. Branch growth potential, reduce nutrient consumption and promote bud growth point activities to create conditions for flower bud formation. Pull shoots from the bud to the early stage of young leaves are good, early branches are more brittle and easy to break, too late nutrient accumulation is not conducive to the formation of flower buds. Pear trees have flower buds and fruiting branches but few fruit set. The main reasons are as follows: 1 Gale, pear ginkgo meets gale 4~5 above, affects the normal activities of insects, and reduces the mucus after the stigma of dried flowers, affecting normal pollination. Fertilization; and the wind will greatly shorten the flowering period, resulting in a very low fruit rate; 2 low temperature, low temperature affect the pollination and fertilization in the flowering stage, after the stigma gets pollen, pollen in 15 ~ 17 °C temperature conditions to normal germination, less than 12 °C Pollen germination is very poor; 3 rainfall, rainfall during flowering may wash off the pollen on the stigma; 4 water shortage, poor soil is not conducive to normal pollination. The solution: 1 At the same time, windy areas, the construction of the park while building a shelterbelt, its direction and the main harmful vertical direction. 2 In the plastic pruning, the method of increasing the weight of the main branch is adopted, and the ratio of the length to the length of the main branch is increased. 3 Reduce the tip fruit by thinning the fruit, so that the resulting part is as close as possible to the stem branch, which can effectively reduce the wind and fruit drop. 4 Artificial pollination during flowering can increase fruit setting rate. 5 In case of drought, timely irrigation should be performed to meet the water supply.

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