Pear tree July fertilizer is very important

July is the rapid expansion of late-ripe pear fruit. Top dressing helps fruit enlargement, increases the proportion of the first and second grade fruits, and can also regulate the competition of nutrients for fruit enlargement and flower bud differentiation, and reduce the phenomenon of size. Fertilizer with nitrogen, phosphorus, potassium compound fertilizer is better, the amount of fertilizer to be different from tree to tree, nitrogen fertilizer should be shallow when the ditch, the depth of 15-20 cm, phosphorus and potassium fertilizer when the groove should be properly deepened. When chemical fertilisers are chased, they must be applied to avoid over-concentration of fertilizers to cause fertilizer damage. This fertilizer is particularly important for trees with large results. For less productive trees, you can either not chase or chase.

Fertilizer for foliar dressing is still applied with NPK combined application. 0.5% urea and 0.3% potassium dihydrogen phosphate are generally used in production. The soon-to-be-harvested early pears should also be sprayed in a timely manner to accelerate fruit enlargement and increase nutrient accumulation in the tree. Foliar spray fertilizer when the main back spray, but both sides should be sprayed to facilitate the absorption of fertilizer and improve fertilizer efficiency.

The saplings that were born 1-2 years after the planting were watered during droughts in summer to ensure the timely supply of water is the key to promoting the growth of saplings. Irrigation times and times should be based on soil management, precipitation, and soil moisture levels. The number of summer irrigations for saplings and primary fruit trees more than 3 years is generally 1 time, and the number of times of tree water irrigation at full fruit period is generally not less than 2 times. The key period of irrigation is the period of fruit enlargement from July to August because the growth and development of the fruit is mainly achieved by the early cell division and the increase in cell volume, while the rapid period of cell enlargement is from July to August. In addition to the need In addition to the supply of carbohydrates, moisture is also one of the most important factors.

It can be seen that the stable and sufficient soil moisture content during fruit enlargement is a necessary condition for fruit growth. If the water supply is insufficient and has a long duration, it will have an adverse effect on the fruit's increase in weight gain. Therefore, when heavy drought occurs in July and August, it should be managed in combination with top-dressing and timely irrigation, and the amount of irrigation water is sufficient. However, the harvested orchards should not be flooded too much at this time to prevent the reduction of fruit quality.

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