Citrus sinensis is an aphrodisiac bud. It is rich in nutrients. Its fresh stems and leaves buds contain 840 grams of water, 98 grams of protein, and vitamins C, A, B, and calcium and phosphorus. Champs may be fried, fried, fried, fresh, dried or pickled. The cultivation of greenhouse sassafras mainly utilizes the nutrients that are accumulated in the tree body during the growth period of the open field to germinate and grow. After rooting, it can restore a certain amount of absorption force, and supply fertilizer and water in proper amounts for the growth of citrons. First, nursery. The greenhouse must be densely planted, with a large amount of seedlings, and a small space, it is appropriate to grow into a dwarf long strong seedlings. Seeds are sown in open protected areas, with small sheds for protection against cold and fine management after sowing, or sowing in Yangshuo in greenhouses or greenhouses in mid-February. The seedbed was fertilized after fertilizing the soil, sowing the seeds and sowing the seeds. After sowing, the seedlings were covered with thin films. The seedbeds were maintained at about 25°C during the day and they were removed when they emerged. After the seedlings are properly reduced, the temperature is maintained at 20-23°C during the day and the night temperature is 13-15°C. The seedlings are 1-2 times, seedlings are seedlings at 3-4 hours, and transplanted to the nursery at 7-8 leaves. The flat seedlings are planted with a spacing of 30-40 cm and a spacing of 25-30 cm. Seedlings are not topping and they are cultivated into single saplings suitable for greenhouse planting. Second, planting and management. After the deciduous seedlings in the middle of October and early November, the top buds are raised in a dormant state in time to prevent freezing. When digging seedlings, leave about 20 centimeters. Seedlings in the false planting canal are buried in the roots, watered, and covered with turfgrass and antifreeze. The temperature below 10°C is guaranteed and the nutrients in the leaves are completely returned to the stem buds. The dormancy period is completed after about 15 days. The greenhouse is planted within 11 months when the average daily temperature is 3-5°C. The indoor and southern digging depth is 0.5 meters wide and the trees are planted at 70-80 angles. The plant spacing is 4-5 centimeters. The year-old saplings are planted with 100-150 strains per square meter, and the biennials are planted with 80-120 strains. After watering. Over 3-5 days before the arrival of the cold wave. After the membrane was sealed, the room temperature gradually increased, and the temperature was kept at 15-22°C during the early days and about 10°C during the night. After 40-50 days, budding occurred. After germination, the temperature is 18-24°C during the day and 13-15°C at night. The axillary bud coloring temperature is above 22°C. When the temperature exceeds 28°C, it can be released for 2-3 hours at noon on sunny days. In late December, if the buds have not yet sprouted, or if the minimum temperature in the room drops to 4-5°C, they can be warmed up temporarily with a stove. 10-15 days after planting and 3-5 days before each harvest, the seedlings were sprayed with water, and the air was sprayed into the air when the air was dry. The relative humidity of the air was maintained at 60-70%. After the first harvest, it will be top-dressed, and after each harvest, it will be poured with a thin fertilizer or spray fertilizer. When the nutrition is insufficient, the axillary bud becomes slender, yellow, and the weight of a single bud is reduced. Third, harvest. The axillary buds grow about 20 centimeters in length and when the color changes to reddish-brown, they are harvested. The first medlar pods are harvested before the Spring Festival, and they are collected every 15 to 20 days for a total of 3-4 times. They end before the open field citrons are listed. Greenhouse pods are delicate and must be cut with scissors or cut off buds with a knife. Do not rub them with your hands to prevent damage to the buds and trees. After the harvest was completed, the seedlings were gradually removed. After hardening the seedlings, the seedlings were exhumed and transplanted to the open soil, fertilized and watered according to the management method of the previous year, and then moved into the greenhouse for use in winter.
classification The editor A drill can be divided into three categories: hand
electric drill, Impact Drill, hammer drill. Minimum 1 hand Electric Drill:
power, use scope is limited to wood drilling and when an electric screwdriver,
part of the hand electric drill can according to the purposes to specialized
tools, use and model more 2. The impact drill, impact drill impact mechanism
have fangs and ball type two kinds Hand electric drill Hand electric drill .
Ball type impact electric drill by the moving plate, plate, steel ball, etc.
Dynamic plate through threads are connected to the spindle, with 12 steel ball;
Fixing use pin fixed on the chassis, with 4 ball, under the influence of thrust,
12 steel ball along the four steel ball rolling, the carbide drill rotating
impact movement, can on the brittle materials such as brick, block, concrete
drilling. Release pin, make the fixing servo plate rotation, no impact, to make
a general electric drill. 3. The hammer drill, electric hammer: can drill holes
on any of the material, the most widely use scope. The three electric drill
price from low to high alignment, function has said
electric hand drill
electric drill, hand drill, portable drill, electric hand drill
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