Navel orange Spring planting time and density:
The planting of navel orange is the optimum period for spring planting from mid-February to early March. If it is a nutrient cup seedling, it will be transplanted and planted after the spring shoots are ripe. The normal planting density of navel orange is 60-80 per acre. In addition to the application of green manure, farmyard manure and other base fertilizers, attention should be paid to the application of calcium magnesium phosphate fertilizer.
Management method of navel orange saplings in spring:
First, the pruning method: After the spring, do the shaping work of the navel orange saplings, cultivate the high-yield tree shape and promote the healthy spring shoots, and erase the adventitious buds on the trunk after the spring shoots sprout.
Second, the fertilization method: before the new shoots of navel orange, each plant of calcium, magnesium and phosphate fertilizer and urea each 1-2 two, borax 0.2-0.3 two.
3. Intercropping method: Summer green manure and legume crops such as cowpea, peanut and soybean are planted between young navel oranges.
Fourth, the method of removing flower buds: if there are flower buds in the new shoots of navel orange, all flower buds should be removed early.
Navel orange fruit tree spring management method:
1. Extend the branches in the short section of the navel orange before the spring buds, thinning the weak branches, over the dense branches, and adjusting the long branches.
Second, in mid-February, chasing spring germination, each application of calcium, magnesium and phosphate fertilizer and urea each 3-5 two, borax 0.5-1 two, with light manure or biogas liquid 1-2. After the spring shoots stopped growing, spray 0.3% urea plus 0.2% potassium dihydrogen phosphate mixture 1-2 times.
Third, the new tips on the navel orange fruit trees should be properly smeared, and the new shoots should be evenly distributed.
4. For the navel orange tree with excessive flowering, shake it once every 2-3 days and remove some leafless flowers. Reduce nutrient consumption, improve flower quality, and increase fruit set rate.
5. Spray 0.1% borax plus 0.3% urea plus 0.2% potassium dihydrogen phosphate once during the navel orange flowering period.
6. When the navel orange flower is 2/3, spray 50ppm gibberellin and 0.3% urea once, and spray again after half a month. In the young fruit period, spray anti-cold and urea.
6. Pay attention to drought irrigation and rainwater drainage during the flowering and young fruit periods of navel orange.
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