Citrus new varieties ----- red meat honey pomelo

Citrus New Variety ----- Red Meat Pomelo Release Date:2008-4-7 Views: 151 Views Hui Ning San Cai Shenghua Lu Xiuyu Huang Xinzhong Institute of Pomology, Fujian Academy of Agricultural Sciences 1. Species Source Red Pomelo Pomelo The Institute of Pomology of the Fujian Academy of Agricultural Sciences was selected from the bud strain of the Oxime pomelo garden in Xiaoxi Town, Pinghe County. Premature performance, pale purple flesh, high yield, high quality. February 2006 that the Committee finds that by non-major crop varieties Fujian Province. Certificate Number: Min recognize fruit 2006006; March 1, 2007 the Ministry of Agriculture granted variety protection, the variety number: CN20050515.7. 2, wherein the biological Characteristics: saplings more upright, adult trees half opened, the first semi-crown shape; green shoots, triangular, internode barbed, 1 to 2 years old branches gray-green, round; backbone trunk and branches ash brown. Bud bud bare, no scales, only bracts; is a complex bud, in addition to a main axillary bud, often 2 to 4 sub-buds. The leaves are single-leaved and long-elliptic, 11- to 13.5-inches long, and 5.5- to 7.7-inches wide; cuspid-tips and nicks are often formed; leaf bases are wedge-shaped; leaf margins are entire; foliage is dark green and smooth. dorsal green, cell-free crude oil distribution point. Leaf wing large, heart-shaped, long 3.4? Wide 3.3 to 4.2 ?,? 1-4 ?, blade life of 15 months. Inflorescence is racemes, part of a single flower; flowers are complete flowers, composed of calyx, petals, pistil, stamens, receptacles; flower diameter 4.2 ~ 5.6?; petals white, 3 ~ 5, downturns; stamens 25 to 33 pieces, thick filaments, white, yellow anthers, pollen and more; style purple, coarse 0.25 ~ ~ 0.35, length 1.4 ~ ~ 1.6, ovary high 0.62 ~ ~ 0.75, stigma large 0.52 ~ ~ 0.65 ? Growth behavior Habits: See Table 3 for the growth conditions of the first-generation and second-generation saplings. The apical dominance is obvious. The young trees in natural growth are easy to form on the strong and weak under the tree. Buds with early maturity, sapling fertilizer and water sufficient, one year can shoot 5 to 6 times, the formation of spring, summer, autumn, winter shoots; as a result, adult trees are generally only once spring shoots, or once again autumn shoots; With self-cut phenomenon. With the exception of the winter shoots, all shoots can be the result of the mother branch, but the spring shoots are the main result of the mother branch. The use of large seedling colonization, the second year can be seen flowering, the third year can be fruiting, strain production up to 15 kg or more, after the fifth or six years into the rich, every 666.7? Yield up to 5000 kg. Phenophase: In the low-altitude area of ​​Pinghe County, red meat and pomelo grapefruit can generally produce spring, summer, autumn and winter shoots every year during the phenological period. The germination period is in late March, mid-June, late July and October respectively. In the middle period from the middle of March to the end of the third month of the flowering period, the flowering rate is high from late March to early April and final flowering in mid-April. Generally up to 50%; fruit development period from early April to early September, early maturity than the Xiximi Pomelo early 20 to 25 days. Fruit traits: fruit obovoid, longitudinal diameter ratio of 15.5: 16; fruit weight 1200 grams to 2350 grams, an average of 1680 grams; skin color yellow-green; fruit shoulder round, skew side; Guoding Guangping , micro-concave, circular round printing is not obvious and complete; fruit surface due to oil cells more sudden, feel more coarse; thin skin, the average thickness of 0.7 ~ 0.9?. The number of capsular sac flaps is 13～17, and there are fissured flaps. The fissure rate is 54%. The capsular skin is pink. The juice cells are red, the juice is rich, the flavor is sweet and sour, and the quality is superior. In 2003 and 2004, the results of fruit quality inspection showed that total sugar was 8.76%, total acid was 0.74%, vitamin C was 37.85mg/100g, soluble solids was 11.55%, fruit juice rate was 59%, and chrysene pigment was lycopene and Beta-carotene was 55.45 1.13 and 41.10 2.24 (μg/gdw), 55-fold and 46.8-fold higher than those of Xixi milo. 3. The resistance to pests and diseases was determined by the Plant Protection Station of Pinghe County Agricultural Bureau. The pest resistance was comparable to that of xixi milo, and the control method was the same. 4. The yield performance was three years after the planting began. The average yield was about 15 kilograms. In the fourth year, the strain production is about 30, and the fifth year is about 55, and the yield per year is 4,000 to 5,000 kilograms. 5, cultivation points planting: Planting density varies depending on the terrain, with grapefruit as rootstock, mountain spacing can be used 33.5 meters, 55 plants per acre, flat spacing 3.54m, 50 acres of planting. Rational fertilization: Saplings are mainly nitrogenous, and 1- to 3-year-old trees use 100-400 grams of pure nitrogen per plant, and N:P2O5:K2O is 1:0.3:0.5. The principle of fertilization is to apply fertilizer thinly and fertilize the plant. Before each tip, the tip fertilizer should be used to promote tip fertilizer, and the tip fertilizer should be applied after the tipping, or from the time of planting until mid-October. The thin human urine should be applied once a month. 11 Fertilizer is stopped on a monthly basis and organic fertilizer can be applied once a month in November. Adult Tree Management: Adult trees are fertilized 3 to 4 times a year. The yield was about 50 kg/plant, and the nitrogen was 0.9 kg. The proportion of balanced fertilization was: Nitrogen:P:K:Ca:Mag=1:0.5:1:1.1:0.4 Within 10 days after application, it accounts for 40 to 60% of the annual fertilization amount; germinating fertilizer (spring fertilizer) is applied around the end of January and accounts for 15 to 25% of the annual fertilization amount; strong fruit fertilizer (summer and autumn fertilizer) is generally After the physiological fruit drop was stopped, the shoots were applied 10 to 15 days before sprouting, accounting for 20 to 40% of the annual fertilization amount. Moisture management: shoot growth period, flower bud differentiation period (from March to May), fruit growth and development period (from July to October) must be timely irrigation to keep the soil moist, and the amount of irrigation water reaches 60 to 70% of the maximum water capacity in the field. The method of irrigation can be furrow irrigation, irrigation, sprinkler irrigation, drip irrigation, etc. Parks with low ground or high groundwater levels should be drained in time. Plastic pruning: Pruning of young trees should emphasize the principle of “controlling shoots by wiping up shoots” and grasping the principle of “going early and leaving less, and staying less”, until the last shoots of the whole plant have 3 to 4 new shoots. When you stop, you stop the tip. Appropriately remove dense shoots and cut off all winter shoots. The initial result tree should pay attention to the cultivation of short spring shoots and autumn shoots, erase summer shoots and winter shoots, sparse upright branches, leave oblique branches or pull branches. In the fruit period, the mature trees retracted in time in the branches, falling flower branches, and decay branches. Cut off dead branches and branches. For trees with too many backbone branches and severe canopy closure, pruning can be done with large branch trimming, saw the middle branch of upright backbone branches, open the "skylight" to introduce light into the internal condyle (saw large branches should be carried out in the spring), on the year when pumping The summer and autumn shoots of raw vegetative shoots were adjusted for short-term yields by short cuts or debrided cuts, and most of shoots or all shoots were treated as stubs on the basis of heavy shoots. Tree height is controlled below 3m. Form a natural happy shape, dry height 20 ~ 40cm, 3 ~ 4 main branches scattered in the trunk. The main branches branching angle of 30 to 45, the main branch of the distribution of 2 to 3 sub-branches, the main branch and pay to the main branch appropriate configuration of a number of side branches. Flower and fruit management: Promote flower bud differentiation According to the tree vigor 9-11 months to control the water, the oblique branches to the upright branches can also be used to cut off the root, or in the 9th to the beginning of October to carry out the ring cutting, ring cutting width in the 0.1-0.2 Cm, suitable for deep xylem. For the resulting mother shoots, the buds were sparsed after the flower buds were first sparse, leaving the middle of the head to stay weak, leaving 2-3 flowers strong. Remove the early summer shoots. After physiological fruiting in early May, 2 or 3 times of root eucalyptus will retain the amount of fruit, leaving the fruit evenly distributed to remove the fruit, fruit, and deformity. Juice granulation treatment: The results of the tree is dominated by organic fertilizer, increased potassium fertilizer; fruit spray must not be sprayed in the flowering period; farming on the tree cover grass, winter deep-turning to improve the soil, improve soil organic matter content and fertility, on the growth Wang's tree, to take measures to regulate growth, adjust nutritional balance, timely harvest. Winter freeze protection: Build a shelter forest, fill with water before freezing, cover grass with small trees or shade nets, cover with orchards, and brush white trunks. 6, suitable areas:

This variety is suitable for planting in Guanxi Pomelo planting area (Citrus adapted to the general area can be planted, but the minimum temperature in winter can not be lower than -8 degrees below zero), mountainous areas and better drainage conditions are more appropriate. (For details, please visit:)

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