What planting density is suitable for pear trees? Key points for rational close planting

AbstractThe planting density of pear trees can be determined according to the variety type, tree size, planting technique, climate environment, soil environment, and root growth environment. Generally, for varieties with a large canopy, many branches, and vigorous growth, the planting density can be based on a plant-to-row spacing of 4-5m, planting about 30 trees per mu. Varieties with a small canopy and few branches can be appropriately planted more densely, based on a plant-to-row spacing of 3-4m, planting about 50 trees per mu, while varieties with a very small canopy can be planted even more densely.

I. Variety type determines planting density

1. Varieties with a large canopy, more branches, and vigorous growth can be planted at a lower density, such as varieties of the White Pear system. Plant 333-500 trees per hectare, with a plant spacing of 4m and a row spacing of 5m.

2. Varieties with a small canopy, fewer branches, and weak growth should be planted appropriately more densely, planting 500-833 trees per hectare, with a plant spacing of 3m and a row spacing of 4m.

3. Japanese pear varieties such as Hosui, Kosui, or Okusankichi have very small canopies, so the planting density can be greater, planting 833-1666 trees per hectare, with a plant spacing of 2m and a row spacing of 3m.

II. The size of the pear tree determines planting density

Generally, large trees are planted at about 55 trees per mu, and small trees at about 75 trees per mu. If the density of branches is too high, some should be thinned out, leaving an appropriate number of branches, and adjusting the density of fruiting branches to a suitable level.

III. Planting technique determines density

The quality of planting technique will have a certain impact on the growth and development of fruit trees. Whether the planting technique and fertilization method are scientific, and whether branch pruning is done properly, all affect the growth of fruit trees. Therefore, the planting density of pear trees can also be determined by the planting techniques and cultivation methods mastered.

IV. Climate environment determines planting density

The climate environment will have a certain impact on the growth and development of fruit trees. In places with poor climate conditions, the growth of fruit trees will be limited, usually resulting in a smaller canopy. If fruit trees need to be planted in poor environments, the planting density can be increased, which can help the tree population resist climate conditions unfavorable to growth. If the environment and climate are suitable and nutrients are sufficient, the fruit trees grow taller and the canopy is larger, so the density can be appropriately reduced.

V. Soil environment determines planting density

The soil environment and fertility of the planting site can also determine the planting density of fruit trees. Fruit trees do not grow easily in soil with low fertility, so the planting distance can be smaller and the density higher. Conversely, in fertile soil with a deep soil layer, they can grow well, and the trees are tall, making them suitable for low-density planting, with both plant spacing and row spacing larger.

VI. The root environment of fruit trees determines planting density

The root growth of fruit trees is mainly maintained by nutrients in the soil. When the planting density is too high, the growth space of the root system will be affected and reduced, thereby affecting the root system's ability to absorb water and nutrients and its metabolism, limiting the growth and development of the root system. A planting method with large row spacing can be adopted to solve the adverse effects brought by high-density planting, and the space and nutrition problems of root growth can be considered from the perspective of high-density planting.