Key points of safe overwintering of antifreeze pear trees by white painting, fertilization and pruning in clear garden

Proper winter management of pear trees is conducive to the accumulation of nutrients, pest control and harvest in the coming year. Hope pear farmers change winter cat winter habits, carefully manage pear trees. A few specific points:

Pear trees overwinter

I. Clear garden and white painting:

The pear garden leaves, weeds, diseased fruit, diseased branches clean up in a timely manner, concentrated burning or deep burial, eliminate harmful bacteria. Spray 1:5 lime solution on pear trunk, because lime water is strong alkaline, can eliminate bacteria and eggs on tree body, create favorable conditions for high yield in the coming year.

Fertilization and watering:

Autumn and winter is the peak period of pear root growth, but also the key period of tree nutrient accumulation. It is necessary to seize the favorable opportunity from pear picking to freezing, timely fertilize, timely supplement tree nutrition, and facilitate flower bud enrichment and recovery of injured root system. The amount of topdressing in this period should account for 60%~70% of the total amount of fertilizer applied in the whole year. Organic fertilizer should be the main fertilizer to improve the organic matter content of soil, improve the aggregate structure of soil and enhance soil permeability. Combined use of three-element compound fertilizer and calcium, boron, zinc and other trace elements. Organic fertilizer mainly refers to fermented human and livestock manure and artificial retting straw and other soil miscellaneous fertilizer. Fertilization can be used to dig radial ditch method, generally ditch width 30-40 cm, ditch depth 30-40 cm, ditch length more than the projection area of trees. After fertilization, watering should be timely to facilitate pear tree nutrient absorption and root recovery. Chilled water can also enhance the frost resistance of pear trees.

Third, tie the grass:

Bind straw on pear tree trunk, can lure overwintering eggs, next year before spring, concentrated burning, reduce pest base, reduce insect disease occurrence next year.

IV. Deep root plate:

Deep turning of the root plate can loosen the soil, enhance soil permeability, and at the same time freeze insect eggs, or let birds eat them, reducing pest damage in the coming year.

V. Shaping and pruning:

Pear pruning should be determined according to pear variety characteristics, age and growth, pruning reaction, natural conditions, cultivation management level and other factors, with targeted pruning and pruning. Young trees are mainly plastic, according to pear varieties, planting density, determine tree shape, promote its early fruit and high yield. Pear trees in full fruiting period should be thinned for light transmission and external cultivation, so as to avoid bald at the base of main branches due to insufficient light in the bore, and constantly renew and rejuvenate the fruiting branch group, enhance its growth and maintain good fruiting ability. Attention should also be paid to coordinating the relationship between large, medium and small fruiting branch groups to make the fruiting branch groups evenly distributed in the tree bore, so as to improve yield and quality. Aging pear trees, timely renewal rejuvenation, re-culture of new crown, as much as possible to keep new branches, as soon as possible culture into fruit branch group.