Navel orange is rich in nutrients, delicious in taste, rich in multiple nutrients, and is one of the favorite fruits. Today, we will share with you the management technology of navel orange seedlings.
The navel orange seedling planting management technology has the following points:
Scientific fertilization. The navel orange seedlings planted in the same year can survive in half a month. After the survival, it is required to apply one quick-acting fertilizer every half month, and apply it with thin manure or 0.5% urea, or apply urea to each plant under the tree tray after rain. Gram, after the application of the pine disk, to facilitate root absorption. After August, it is not advisable to apply quick-acting fertilizer to avoid the late autumn shoots. In the second year, the topdressing was carried out 3 times, and the spring, summer and autumn shoots were applied. Spring fertilizer is in early February, summer fertilizer is in mid-May, and autumn fertilizer is in mid-July, with 0.2-0.4 kg of urea per plant. After the autumn shoots are matured, the base fertilizer is re-applied, and each plant has 10-20 kg of fertilizer, 2 kg of superphosphate, and 1 kg of compound fertilizer. In the third year, the saplings began to increase the application of phosphorus and potassium fertilizers and organic fertilizers to meet the needs of flower and fruit development. In the first half of February, each plant was given 0.4 kg of urea, and from the beginning of April until the first ten days of August, the root dressing was carried out every 20 days, mainly potassium dihydrogen phosphate 0.2% + 0.3% urea + 0.2% borax + sulfuric acid. Zinc mixture or special micro-fertilizer, in the first ten days of July, the plant is fertilized with 2 kg of compound fertilizer per plant, and in autumn, it is applied to Yang Fertilizer, and it is gradually cultivated according to the conventional fertilization method of adult trees.
Reasonable shaping and trimming. Young trees must be cultivated in a tree shape. Do not tamper with branches and cuts. Generally, buds, sparseness, and short cuts are used to promote multiple shoots. Specific operation method: In principle, the first year does not move the branches and shears, except to remove the pests and branches, and the dead branches; in the second year, the seedlings leave about 25 cm of trunk, and 3-4 uniformly distributed main branches are cultivated in the plastic belt above the trunk. Do two summer shears work, the first time in mid-May, a short one-third of the old spring shoots around the canopy, promoting a strong summer shoot, the second time in mid-July to the old crown of the canopy The method of mild topping, in the middle of June, leaves 6-8 leaves in the summer, and continues until mid-July. The lychee in the drooping branch is kept as much as possible, and the canopy is dense and the stalks are long and the ropes are opened 2-4. The trunk is the trunk. In the second year, flower buds should be wiped out in time. In the third year, the flower buds are mainly used. The leaves are free of leaves, deformed flowers, cut off dead branches, and some fruit-preserving measures are taken. The yield per plant is generally controlled from 5 kg to 8 kg, and the excess fruit is erased.
Auxiliary management. After the seedlings are planted, the rice straw will be used to cover the tree trays in the same year, so as to protect the seedlings. In the winter, before the cold wave, cover the seedlings with large convenient bags or cover the branches with straw and brush the trunk with whitening agent. Orchards promote intercropping of legume crops or adopt orchard grass. The control of pests and diseases is basically the same as that of adult trees. In the third year, we should take corresponding measures to eliminate flowers and protect fruits to ensure early harvest.
The LED emergency inverter is a combination of a white high-quality ABS shell and an external lithium ion battery , which is small in size and easier to hide in the ceiling . This emergency conversion kit is suitable for all external driver of LED lights in the wide voltage AC85-265V range , equipped with lithium ion battery that can be recharged up to 500 times , the emergency power supply has multiple protection functions , such as overcharge , over-discharge , short circuit protection , etc .
Led Inverter,Led Power Converter,Led Emergency Battery Driver,Emergency Light Conversion Kit
Jiangmen City Pengjiang District Qihui Lighting Electrical Appliances Co., Ltd , https://www.qihuilights.com