Ripe sugar orange.
I. 1 month management
1, plastic trimming
Prune too dense, too weak, twisted and disorderly tree buds and twigs to adjust the tree potential. In winter, it is mainly to transform the tree type, dwarf the crown and enhance the illumination of the crown.
2. Clean the countryside
Branches of pests and diseases should be removed from the garden and burned to reduce the source of pests and diseases. Spraying 1.5-2 degree sulfur mixture or 95% organic oil emulsion 50-80 times plus organophosphorus pesticide to kill overwintering pests and clean the countryside.
Second, February-April management
It is appropriate to control adult spiders, egg lumps, scale insects, mosses, lichens, etc. From late February to early March before spring buds germinate. Trees with many flowers should prune some tender buds to bear mother branches to promote the bearing of mother branches in the next year.
Management in March and May
Management of fertilizer and water, application of plant hormones and spring cutting (control of spring seedlings). Young fruits control scab, red spider, aphid, leaf roller moth, white scale, chaff scale, arrowhead scale, whitefly and so on.
Guangdong shatangju
Management in April and June
1, prune early according to citrus varieties, tree potential, yield, etc.
2, improper fertilization is easy to bolting in summer, which will compete with the fruit for nutrients and cause fruit drop.
3, leaf curl moth, red wax scale, white wax scale, arrowhead scale, rust tick and other pest control.
May and July management
Apply strong effect fertilizer. With the rapid fruit expansion stage and autumn shoot stage, flower buds begin to differentiate physiologically. Covering: reduce the surface temperature, reduce water evaporation, and resist high temperature and drought. Pest control: rust, red spider, liriomyza sativae, locust, longicorn beetle, canker, etc.
Six, August-10 month management
The late stage has the greatest influence on fruit quality, and nitrogen control and ring cutting are adopted. In addition, the control of leaf miner, aphid, anthracnose, whitefly, rust mite and anthracnose is equivalent to the control of fruit drop and pests before harvest. Fruit drop before harvest is often accompanied by pests, brown rot and green mold, and some varieties have cracked fruit.
Seven. 1 1-65438+ February management
Reduce the soil moisture before fruit picking, reduce the role of nitrogen fertilizer, improve the sugar acidity of fruit, and make the fruit rich in flavor. In frost-free areas, the trees are fully mature, the sugar content increases by 1-2 degrees, and the colors are more vivid.
The above is about the annual management technology of sugar orange. In order to ensure the yield and quality of sugar oranges, these aspects must be done well. Do you have anything to add about sugar oranges?