Red pomelo, also known as red pomelo, red flesh pomelo, blood pomelo. In recent years, it has been widely popular in the market, and many farmers are rushing to plant it, so how much is a red heart grapefruit tree? How is it cultivated? Let's take a look:
1. How much is a red heart grapefruit tree? The red heart grapefruit tree is an evergreen tree. The leaves are large and thick; The wings are large and heart-shaped. The flowers are large, often clustered to produce racemes. The fruit is large, rounded, oblate, or broadly obovate; Orange when ripe. The young branches, leaf back, peduncle, calyx and ovary are pubescent, and the young leaves are usually dark purplish-red, and the young branches are flat and ridged. The leaves are quite thick, dark green, broadly ovate or elliptic, 9-16 cm long, 4-8 cm wide, or larger, obtuse or rounded at the apex, sometimes short pointed, rounded at the base, wing lobes 2-4 cm long, 0.0 cm wide5-3 cm, some varieties have very narrow wing lobes. racemes, sometimes with axillary solitary flowers; Flower buds pale purplish-red, sparsely milky-white; calyx irregularly 5-3 shallowly lobed; The petals are 15-2 cm; stamens 25-35, sometimes partially sterile; The columella is thick and long, and the stigma is slightly larger than the ovary. Fruit spherical, oblate, pear-shaped or broadly conical, usually more than 10 cm in diameter, pale yellow or yellowish-green, hybrids vermilion, very thick or thin peel, spongy, large oil cells, convex, fruit core firm but soft, scoop sac 10-15 or as many as 19 petals, juice cell white, pink or bright red; There are more than 200 seeds, there are also seedless, irregular shape, usually approximately rectangular, the upper part is thin and often truncated, the lower part is full, and most of them are underdeveloped, there are obvious longitudinal ribs, cotyledons are milky white, and the embryo is single. The flowering period is from April to May, and the fruiting period is from September to December. 5-year-old red heart grapefruit tree**: 800 yuan.
2. Key points of red heart grapefruit tree cultivation technology: 1Establishment of pomelo orchard: Choose to build the garden in a sandy loam land zone that is sheltered from the wind and the sun, has abundant water sources, and has a deep soil layer. 2.Seed selection: the selection of developed root system, robust, annual grafted seedlings for planting, in the case of better management conditions, seedlings can quickly resume growth, crown formation is also faster. 3.Expansion of holes and soil improvement: An important measure to improve land conditions is the basis for early fruiting, high quality and high yield. Hole expansion and soil improvement generally start in the second year after planting, and the best effect is completed in the third year. The specific method is to excavate a ditch with a depth of 60 70cm and a width of 40 50 cm on both sides according to symmetry under the drip line of the canopy, and fill in a load of green manure and fire soil, 15 kg of calcium, magnesium and phosphorus fertilizer, an appropriate amount of lime and topsoil, applied in layers and compacted to improve the soil. 4.Reasonable pruning: use thinning pruning, pruning more on the outer branches of the canopy, and less pruning on the inner branches. Pruning time: Young pomelo trees are generally pruned in 2 times, namely summer pruning and winter pruning; The fruiting pomelo tree is generally pruned in 3 times (i.e. spring, summer and winter), spring pruning in February and March, summer pruning in May and July, and winter pruning in half a month after fruit picking, that is, in October and November. Pruning method: do not use the "one-size-fits-all" method, focus on thinning the peripheral branches, and use the "open skylight" pruning method for the dense canopy. This method can effectively control the canopy, promote the germination of inner branches, and avoid the loss of yield due to heavy pruning.
5.Fertilization method: the use of annular furrow application, the number of fertilization in accordance with the requirements of "basal fertilizer autumn application, germination fertilizer cautious application, fruit preservation, fruit fertilizer combination" requirements for fertilization 3 4 times a year. It is mainly composed of well-rotted organic fertilizer, supplemented by inorganic fertilizer, and more phosphorus and potassium fertilizers are applied. 6.Reasonable fruit thinning: first stunted deformed fruits, small fruits and diseased insects and insects are thinned, and the amount of hanging fruit is generally based on the leaf-fruit ratio (160 200): 1. The pomelo can ripen in September, and the maximum fruit can reach 35 kg, the third year after planting can hang fruit, thin skin, less kernel, more juice, red flesh, crisp and tender, containing lycopene and -carotene, with anti-cancer effect. It has good yield, with a yield of up to 2000 kg per 667 square meters.
Green pomelo net seedlings, click to understand