Detailed Explanation of Post-Harvest Management Techniques for Pear Trees
How should pear trees be managed after harvest? Please explain the methods. Post-harvest management of pear trees can refer to the following methods: 1. Clear the orchard and prune. After harvesting the fruit from pear trees, all kinds of weeds, dead branches, fallen leaves and fallen fruit in the orchard must be cleared away in time, and the shaded branches inside the canopy, as well as diseased and pest-infested branches, weak twigs, dry dead branches and overlapping...
How should pear trees be managed after harvest? Please explain the methods.
Post-harvest management of pear trees can refer to the following methods:
1. Clear the orchard and prune. After harvesting the fruit from pear trees, all kinds of weeds, dead branches, fallen leaves and fallen fruit in the orchard must be cleared away in time, and the shaded branches inside the canopy, as well as diseased and pest-infested branches, weak twigs, dry dead branches, overlapping branches and excessively dense branches outside the canopy, must be pruned off and burned outside the orchard to reduce sources of disease and pests.
2. Apply post-harvest fertilizer. After clearing the orchard and pruning, apply post-harvest fertilizer in time, mainly high-quality organic fertilizer and nitrogen-phosphorus-potassium compound fertilizer. For bearing trees over 10 years old, apply 40-50 kg of decomposed and rotted human, poultry and livestock manure per tree. For nitrogen-phosphorus-potassium compound fertilizer, 2-3 kg per tree; dig a ring trench 25-30 cm deep and 25-30 cm wide around the tree canopy drip line, evenly scatter the fertilizer into the trench, and backfill soil to cover the fertilizer.
3. Prevent and control diseases and pests. After clearing the orchard and pruning, spray the inside and outside of the canopy once with a 0.8-1 degree Baume lime-sulfur mixture aqueous solution to eliminate various diseases and pests attached to the branches and leaves. During the period when new shoots emerge, spray once a mixture of 800-fold trichlorfon, 1000-fold dichlorvos and 800-fold thiophanate-methyl to eliminate various diseases and pests harming the new shoots, so as to protect the tender shoots.
4. Foliar topdressing. After harvesting the fruit from pear trees, foliar spraying must be carried out 3-5 times with a mixture of 0.1% magnesium sulfate, 0.2% urea, 0.3% monopotassium phosphate and 1000-fold triacontanol, or with an 800-fold fruit-tree-specific Gaomeishi organic humic acid solution, sprayed once every 7-10 days, evenly wetting all leaves, so as to rapidly raise the nutrient level of the leaves, strengthen the tree vigor, and help the bearing mother branches emerge.
5. Cultivate soil and mulch. After applying post-harvest fertilizer, decomposed and rotted garbage fertilizer, burned soil, pond mud, farmyard manure, etc. must be applied in time onto the surface soil under the canopy. Apply 150-200 kg per tree, cultivating inward from 30-40 cm outside the canopy drip line to 40-50 cm away from the trunk, then cover the tree disk with rice straw or other weeds, with a grass thickness of 3-5 cm, to reduce water loss.
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