When is it good to bag a pear tree? How to fertilize after bagging?

Pear tree bagging is generally recommended to be carried out within 15-45 days after the end of flowering, that is, after fruit thinning and before the appearance of rust spots at fruit spots. In addition, it should be noted that bagging should not be carried out when the dew is not dry or the liquid medicine is not dry. The bagging time is generally selected at 9-11 o'clock in the morning and 3-6 o'clock in the afternoon every day, and it is not recommended to do it on rainy days.

1. For the fertilization of pear trees after bagging, it is best not to apply single-element fertilizer. You can use some water-soluble fertilizers with a large number of elements with relatively fast fertilizer effect, or other water-soluble fertilizers, with an appropriate amount of fulvic acid, amino acids and other fertilizers to promote rooting, and the effect is better.

2. After the pear tree is bagged, it can be applied with a large number of elements of high phosphorus water-soluble fertilizer according to the specific situation of the fruit tree. At the same time, potassium dihydrogen phosphate can be added to the water medicine after bagging.

During the period from the end of the month to the end of September, high-potassium fertilizers can be applied according to the specific conditions of the fruit trees.

4. After the pear tree is bagged, do not apply nitrogen fertilizer alone. Practice has proved that after bagging, supplementing nitrogen fertilizer alone can easily cause poor pear color and unbright fruit surface.

In our family, pears are often bagged when they are about the size of a thumb nail, and before bagging, they will be sprayed, which is the basic insecticide and pesticides to prevent dark spots, and the fertilization is normal potassium ammonia fertilizer.

Pear tree bagging is generally carried out within 15-45 days after the end of flowering, and it is not recommended to bag pear trees when the dew or liquid medicine is not dry, and it is not recommended to bag pear trees on rainy days. After bagging, you need to use some water-soluble fertilizers that are more efficient and watered enough after fertilization.

Pear tree bagging is for better fruit tree management. Generally speaking, the pear tree should be bagged after the fruit has been firmly sitting, and the pear tree needs to be fertilized after bagging.

The main pests and diseases of pear trees before bagging are scab, black spot, Kang's mealybug, mealworm, etc., the prevention and control of scab and black spot can be sprayed with 1000 times of Yibao, 40% Fuxing solution, 2500 times of enazole, and 10% imidacloprid 3000 times and 3% acetamiprid 2500 times of liquid.

1. Precautions for pear tree bagging.

In order to improve the efficiency of bagging, the operator can prepare a bag around the waist, and put the fruit bag in the bag to make the fruit bag within reach. When bagging, twist the bag mouth with your fingers, hold the bottom of the bag with one hand, reach into the bag with the other hand to open the bag body, and then pinch the two corners of the bottom of the bag to open the vents at the two bottom corners, and make the whole bag body bulge into a ball.

Second, the pear tree bagging time.

Pear tree bagging is generally recommended within 15-45 days after the end of the flowering period, the bagging time is between 9-11 o'clock every day, between 3-6 o'clock in the afternoon, it is not recommended to carry out bagging on rainy days, the accurate time of bagging is within 20mm of the fruit transverse diameter, the fruit point has not yet occurred or rarely occurs when it is appropriate, before bagging should be carefully thinned in accordance with the requirements of the load, and the bagging can be carried out immediately after the book has been played, and the time of about 10-15 days is over.

3. Water and fertilizer. The water content of mature pear tree fruit can reach 90%, and the water content of pear branches, leaves and roots is about 50%, which shows that water is the top priority of pear tree life activities.

Spray 6000-8000 times of 70% imidacloprid water dispersant or 8000-10000 times of 20% acetamiprid soluble powder before pear bagging, which can avoid yellow mealy aphid fruits.