Grapefruit high quality and high yield cultivation management technology
One, strong tip, tip to green
The prosperous tree shoots 4-7 centimeters long when spring shoots 15% 600 times paclobutrazol, making the spring shoots short and strong, strong inflorescence, spring shoots with green Fenwei spray crown, promoting the leaves turn green.
Second, mulching, moisture cooling
In summer and autumn, the high temperature of soil moisture evaporates, and the orchard lines are covered with plastic film or interplanted with low-vegetable, peanut, and leguminous crops. Summer heat and drought, moist, inhibit weed growth, is conducive to the growth of teak green, increase teak production, increase the economic benefits of grapefruit.
Third, timely pollination, improve fruit
1. Artificial pollination chooses fine weather, picking out the flowers of the flowering pomelo tree, wrapping the pollen in white paper, wrapping it into a cloth bag, wrapping it around the person's waist, and removing the pollen after 24 hours, adding borax. After mixing 1%, use a brush or cotton swab to place on the pomelo head.
2. Insect pollination was mixed with 0.2% urea plus 0.3% granulated sugar plus 1.2% bee sugar plus 98% clear water, and sprayed with a miniature sprayer on a sunny morning at 8-10 o'clock in the morning at 8-10 o'clock in the morning. 2-3 times, induce bees to pollinate and increase fruit set.
Fourth, timely fruit thinning
When the young fruit grows to large peas, the first fruit thinning is performed, mainly removing small fruits, pests, and malformed fruits. In general, the tree-bearing capacity is l-1.5 times longer than when the fruit grows up to the big finger, and the second fruit thinning is performed. At this time, the fruit size required for fruit thinning is consistent and evenly distributed.
Fifth, young fruit transfer
When the pomelo fruit grows to a large egg size, it cuts out the dense young fruit or double fruit and transfers it to the result of a few branches, so that the nutrient supply is sufficient, the fruit is grown, and the yield is increased.
Six, Baohuabaoguo
In the flower bud period crown spray 0. l% Green Fenwei foliar fertilizer plus 0. l% Borax, plus 0.2% Molybdamine plus 0.2% Potassium Dihydrogen Phosphate plus 0.3% urea Spray 2 times after the crown (every 7 days); A bag containing 1 g bag of gibberellin, 20 X 10-6, was sprayed on the canopy after being dissolved in alcohol. The physiological fruit drop period consisted of dissolving 1 kilogram of cytokinin (BA) and water to 200 X 10-6. From mid-April to In the first half of May, the fruit dressing was applied once, and in the late May to the middle of June, the fruit pedicle was coated once more.
Seven, grasp pest control
1. Prevention of buds buds in the emergence of adult feathers emerged during the rainy season after the rain with 3% carbofuran granules 0.8 kg mixed river sand 25 kg spread to the ground. 90% trichlorfon (or 80% dichlorvos emulsion) spray 600 times the crown l-2 times. Artificially remove the affected buds in time and scald with boiling water.
2. Prevention of warts, blows, and blows in the first half of May in the first generation of young hatchlings hatching spray injection of chai mixture l-2 times, washing and combusting mixture (washing powder 0.5 parts 10 diesel 1) 80-100 times Liquid or 40% speed smash emulsion 1500-2000 times liquid alternately.
3. Control red and yellow spiders spray 2,000 times with 5% Nissopol 2000 times plus 40% iridescent phosphorus 800 times or Keziite 2000 times plus a small amount of diesel.
4. In winter, 6 kg of quick-drying lime is used, 1 kg of liquid of limestone mixture is added, 1 kg of salt is added, 50 grams of omethoate is added, and 15 kg of watered teak trunks are used to prevent disease.
VIII. Strengthening fertilizer and water management
The saplings are mainly vegetatively grown during the sapling cultivating period, and the crowns of the early early plentiful cultivars are cultivated. Therefore, every year before and after the spring, summer and autumn shoots, 1 application of shooter fertilizer and strong shooter fertilizer is applied. The application of farmer's fertilizer 5-8 kg is added with urea. L-0.2 kilograms of mixing facilities, after entering the result period, it is generally applied in mid-February and thinly applied spring fertilizer. The application of farmland fertilizer is 50 kg plus urea of ​​0,3-0.4 kg. In the middle of May, he applied stabilizing fruit fertilizer. L% Green Fenwei foliar fertilizer l-2 times or 0.2% potassium dihydrogen phosphate and 0.3% urea mixed application of root dressing. In the middle of July, re-emphasizing strong fruit to promote shoot fertilizer, applying 60 kg of farmland fertilizer plus 1 kg of superphosphate and 2 kg of plant ash. In the middle and late September, Shen Shicai sent marrying manure (also known as rejuvenating fertilizer). The planted farmyard manure 60 kilograms of refueling cake fertilizer was mixed with 1 kilogram to restore the tree vigor.
Nine, do a good job pruning
1. Pick up the shoots in spring and summer in a timely manner. When the growth is about 30 cm in length, proceed in a timely manner and remove excess buds.
2. Pruning and shaping In the autumn, measures such as support, pulling, and lifting are applied to strong trees to increase the opening angle, ease the growth potential, and promote early results.
3. In the second half of September, the circumcised flowers were cut with a sharp knife on the side branches for 3 rounds in a staggered manner to prevent the nutrient of the leaves from being conveyed down, increasing the accumulation of organic nutrients in the leaves, and effectively increasing the amount of flowers in the following year.
4. The late autumn shoots and winter shoots that are issued after the late autumn shoots and winter shoots are controlled in late November will consume a large amount of nutrients and are not conducive to the differentiation of flower buds from the mother stems in the following year. When the autumn shoots turn green and mature, spray 300 times paclobutrazol inhibitors l-2 times, which can effectively avoid the winter shoots.
5. After pruning and digging the fruit, remove the l-2 sticks in the upper part of the crown and increase the transparency of the inner part. In pruning, we must master the principle of being lighter, lighter, lighter, and lighter. We must be more sparsely cut, moderately pruned, cut off overlapping branches, twisted by branches, pests, branches, stems, stems, and fruit. Branches should be treated with three sparse ones and five sulphur twos so that the branch shoots are evenly distributed. The branches along the side of the tree crown, the short fruit branches, the non-leaf branches at the lower feet, and the drooping branches are allowed to make the canopy ventilate and transmit light, and the annual yield is stable and stable.
Ten, timely harvest
It is generally appropriate to harvest in late November. Pick a sunny day and pick it up, transport it, and store it. When storage is fresh, the 2,4-D plus carbendazim solution can be used to wash the fruit and sterilize it, and then it can be packaged and stored in a single storage bag.
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