Because it contains more carotene and vitamins B and C, it has the functions of clearing heat, detoxifying, stimulating the stomach, and killing insects. It has been favored by people in both urban and rural areas. Greenhouse cultivation of Citron has less investment, quick effect, easy promotion, high efficiency, and income is several dozen times of planting crops. The cultivation techniques are introduced as follows: 1. Seedling cultivation. At the end of March, loose and fertile land was selected and basic fertilizer was applied. Apply 2000kg of alum fertilizer per acre with a small amount of urea, and plow till uniform. In the north-south direction, the seedlings are 1 meter wide, and within 2 centimeters or 3 centimeters wide, shallow grooves are formed within 20 centimeters. The new Toona sinensis seeds will be winged, soaked in warm water at 40°C for 10 hours, and then washed repeatedly with fresh water, mixed with a 1:1 volume of fine sand, and then spread evenly in the open shallow ditch. About 3 kg of pure seeds are used for mu. . When the seedlings of citrons grew 2 to 4 true leaves, the seedlings were weeded and the seedling spacing was maintained at about 15 cm, and about 20,000 mu were left. Second, build a shed and transplanting. The utility model adopts an ordinary oblique plastic film solar greenhouse, which is 8 meters wide from north to south and 40 meters long from east to west. The wall is made of earth, and the back wall is 2 meters high, 60 centimeters thick and 2.4 meters high. In the shed, cement pillars were used as scaffolds. The sheds were sloped with bamboo rods as cross beams, covered with ordinary polyethylene film, and covered with grasshoppers at night. Shed with corn stalks and straw stubs on the back slope of the shed, protected against heat and cold. From early to late November, the seedlings of citron shall be transplanted in the greenhouse. Before planting, Mushi diammonium 100 kilograms, chicken manure 500 to 1000 kilograms, deep-turn 60 centimeters, squeaking, flattening, 1 m wide, 40 cm wide, easy to walk into the picking, acres planting 8 to 10 10,000 plants. After 10 to 15 days after planting, the seedling stage was mild and the temperature was 10°C during the day. During the growth period, the temperature was 18 to 23°C and the night time was 13 to 15°C. 3. Shelter management and postharvest management. Planting water after planting, to fill with water. The second time the water was used to pick up the two scented citrons. Before the third round of watering, 25 kilograms of diammonium and urea were mixed to make it dissolve with water. At the same time with 0.5% urea and potassium dihydrogen phosphate, every other week alternately sprayed on the leaves of Toona sinensis for foliar fertilizer. Every morning, we should roll up the grass on the front slope to maintain a suitable temperature in the shed. Snow cover should be timely cleaned when snowing, to prevent damage to the shed body. About 50 days after the seedlings are planted, the top buds can grow to about 20 cm. The first shoots can be taken this morning. For the first time, only the terminal buds were harvested and removed in order to promote the sprouting of the buds, and they should be timely fertilized and watered after the buds were picked. In the later period, when the buds grow to 15 cm, picking is started. At the same time, the basal part of the buds retains 1 to 2 leaves and promotes the regeneration of new shoots. The picked toon buds should be spread out and dampened and cooled. Avoid packing with plastic bags to prevent the buds from falling off the heat and reducing the quality of the buds. After the end of the harvesting period, transplant the seedlings in Daejeon at the end of April. Lazy support, from June to July, when it is prosperous, it can be sprayed with paclobutrazol 300 times for dwarfing treatment, and then transplanted into the shed for growth and harvesting.
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