How much is a red grapefruit tree? (with key points of cultivation techniques)

Red heart pomelo, also known as red heart pomelo, red meat pomelo, blood pomelo. In recent years, it has been very popular in the market, and many farmers are scrambling to plant it, so how much is a red grapefruit tree? How to cultivate it? Next, let's learn about:

How much is a red grapefruit tree?

The red grapefruit tree is an evergreen tree. The leaves are large and thick; the wings are large and heart-shaped. Flowers large, often clustered into racemes. The fruit is large, round, oblate or broadly Obovate; orange at maturity. Twigs, dorsal leaves, pedicels, calyx and ovary are all pilose. Young leaves are usually dark purplish red, and twigs are flat and angled. The leaves are thick, dark green, broadly ovate or oval, 9-16 cm long, 4-8 cm wide, or larger, the top is obtuse or round, sometimes mucronate, the base is round, the wing leaves are 2-4 cm long and 0.5-3 cm wide, and the wing leaves of some varieties are very narrow. Racemes, sometimes with axillary single flowers; buds purplish red, sparse milky white; calyx irregularly 5-3-lobed; petals 1.5-2 cm long; stamens 25-35, sometimes partially sterile; style thick and long, stigma slightly larger than ovary. The fruit is globose, oblate, pear-shaped or broadly conical, usually more than 10 cm in transverse diameter, yellowish or yellowish green, hybrids are scarlet, the pericarp is very thick or thin, spongy, oil cysts are large, protruding, fruiting but soft, ladybags are 10-15 or more than 19, juice cysts are white, pink or bright red There are more than 200 seeds, there are also seedless, irregular shape, usually oblong, the upper part is thin and often truncated flat, the lower part is full, mostly underdeveloped, there are obvious longitudinal ribs, cotyledons milky white, single embryo. The flowering period is from April to May and the fruiting period is from September to December. The price of 5-year-old red grapefruit tree is 800 yuan per tree.

Second, the key points of cultivation techniques of red-heart grapefruit tree:

1. Establishment of pomelo orchard: choose to build a garden in the sandy loam zone with shelter from the wind and the sun, rich water, deep and fertile soil.

two。 Seed selection: 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 is formed faster.

3. Expanding holes and improving soil: an important measure to improve land conditions is 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 60-70cm deep and 40 70cm 50% wide cm trenches on both sides under the crown dripping line, fill in a load of green manure and burnt soil, 1.5kg calcium magnesium phosphate fertilizer, appropriate amount of lime and topsoil, layer by layer, compaction to improve the soil.

4. Reasonable pruning: thinning branches, more cutting of the outer branches of the crown and less cutting of the inner branches. ① pruning time: young pomelo trees are generally pruned twice, that is, summer pruning and winter pruning; results pomelo trees are generally pruned three times (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. ② pruning method: do not use "one size fits all" method, focus on thinning the outer branches, and "open skylight" pruning method can be used for 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.

5. Fertilization method: using annular ditch application, fertilization times according to the requirements of "autumn application of base fertilizer, careful application of budding fertilizer, combined application of fruit protection and strong fruit fertilizer", fertilizing 3 times a year for 4 times. Mainly with rotten organic fertilizer, supplemented by inorganic fertilizer, and apply more phosphorus and potassium fertilizer.

6. Reasonable fruit thinning: first, the malformed fruit, small fruit and disease and insect fruit should be thinned, and the ratio of leaf to fruit should be (160: 200): 1.

Red heart pomelo can mature in September, the largest fruit can reach 3.5 kg, the fruit can be hung in the third year after planting, the peel is thin, the kernel is less, the fruit juice is more, the flesh is red, crisp and tender, and contains lycopene and β-carotene, which has anticancer effect. The yield is good, with an output of 2000 kg per 667m2.