How to determine the reasonable load of planting Pear trees

Under normal management and moderate load conditions, the flower quantity of adult pear trees is generally too much, and the flower branch rate of some trees is as high as 7080%, which is full of flowers. Although too much flower is the basis of high yield, too much fruit will show a large number of falling fruit and small fruit, and there will be less flowers in the next year, big and small years, even if there is enough fertilizer and water, you can not set too much fruit, therefore, it is necessary to control the pear tree to have a moderate load. There are many ways to determine a reasonable load. Among them, there are not only cultivation experience, but also digital indicators. For example, according to the planned yield per unit area, ramet burden, and then recalculate the number of fruit per plant according to a single fruit, and divide it into each big branch; according to several new shoots, one fruit, so that the fruit is evenly distributed among the branches; according to the number of leaves and one fruit, calculate the number and reasonable distribution of the remaining fruit; keep the fruit according to the distribution distance of the fruit in the crown; according to the weight of the single fruit of the pear, keep the fruit by experience, the fruit last year is small, and there should be less this year. Last year, the fruit was too thin and too big, so it should be kept more this year. It is also proposed every year that the fruit should be retained according to the cross-sectional area of the trunk, which is suitable for primary fruit trees. The reasonable load is affected by many factors, such as cultivation conditions, quality requirements and so on. The index of reasonable load should be adjusted in time. For example, with the development of market economy, the demand for the quality of pear fruit has increased, the price difference between grades has increased, and the production of more small fruits is not as good as the production of fewer large fruits. Yangxin Yali pear and pear farmers used to require a yield of 5000 kg per mu, but now they require a yield of 4000 kg of high-quality fruit per mu. Because the production of 4000 kilograms of high-quality fruit is better than the production of 5000 kilograms.