Cultivation techniques of Sanhong honey pomelo

The peel of Sanhong honey pomelo is rarely pink under the leaves, the sponge layer under the pericarp is pink, and the pulp is rose red, which is a very high quality grapefruit. Let's take a look at the cultivation techniques of Sanhong honey pomelo.

I. Establishment of pomelo orchard

Choose to build a garden in the sandy loam zone with shelter from the wind and the sun, rich in water, deep and fertile soil, the garden is equal to high terrace, the plant spacing is 3 meters × 3 meters, and the planting way is triangle. Red-skinned red flesh honey pomelo can be planted all the year round as long as the new shoots are ripe.

2. Selection of robust seedlings

The grafted seedlings with developed root system, strong growth and one-year-old seedlings are selected for planting. Under better management conditions, the seedlings can resume growth quickly and the crown can be formed quickly.

Third, expand holes and improve soil to improve fertility

The important measures to improve site conditions are the basis of early fruit, high quality and high yield. Hole expansion and soil improvement generally begin in the second year after planting, and the effect is the best in the third year. The specific method is to symmetrically dig ditches with a depth of 60 mi 70 cm and a width of 40 mi 50 cm on both sides under the crown dripping line, fill in a load of green manure and burnt soil, 1.5 kg of calcium magnesium phosphate fertilizer, appropriate amount of lime and topsoil, layer by layer, and compaction to improve the soil.

4. Reasonable pruning and correct girdling

1. Pruning principle: thinning branches, cutting more branches outside the crown and less cutting branches in the inner chamber.

two。 Pruning time: young pomelo trees are generally pruned twice, that is, summer pruning and winter pruning; results pomelo trees are generally pruned three times, that is, spring pruning, summer pruning and winter pruning, spring pruning is from February to March, summer pruning is from May to July, and winter pruning is half a month after fruit harvest, that is, October to November. Pruning method: do not use the method of "one size fits all", focus on thinning the peripheral branches, and the "open skylight" pruning method can be used for the dense canopy. This method can effectively control the crown and promote the germination of inner bore branches without reducing the yield due to heavy cutting. The inner bore branch should be cut off the fruit branch, dead branch, disease and insect branch and weak branch. The pomelo trees that did not bloom or flowered less were girdled in late September.

5. Fertilization methods

According to the requirements of autumn application of base fertilizer, careful application of budding fertilizer, and combined application of fruit protection and strong fruit fertilizer, the ring ditch application was applied for 3 times a year for 4 times a year.

VI. Reasonable fruit thinning and bagging

First of all, the malformed fruits, small fruits and diseases and insect pests are sparse, and the ratio of leaf to fruit is generally (160 / 200): 1 is better. After thinning and fixing the fruit, the young fruit should be bagged when the weight of the young fruit is 100ml 150g and the transverse diameter of the fruit is about 5cm. When bagging, we should pay attention to the width and tightness of the bag, neither loosening the mouth of the bag nor damaging the stalk.

The fruit of Sanhong honey pomelo has a thin skin, seedless flesh, bright color, soft juice, sweet and slightly sour, is a popular fruit in the market, is a very high-quality fruit, can be planted under certain conditions.