An amorphous carbon. Light, loose and very fine black powder with a very large specific surface area ranging from 10 to 3000m2/g is the product of incomplete combustion or thermal decomposition of organic matter (natural gas, heavy oil, fuel oil, etc.) in the absence of air. Specific gravity of 1.8-2.1 made from natural gas called "gas black", made from oil called "lamp black", made from acetylene called "acetylene black". In addition, there are "trough black" and "furnace black". Carbon Black is classified into "reinforcing carbon black", "conductive carbon black" and "abrasion resistant carbon black". It can be used as a black dyestuff for the manufacture of Chinese ink, ink, paint and so on. It is also used as reinforcing agent for rubber.
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1. Characteristics and Economic Benefits This species has a strong growth potential and is dominated by Sun Manggua. High resistance to wilt disease, premature aging is not easy. The growth period of summer and autumn sowing is 65-70 days. Seeding in the middle and late July, transplanting in mid-August, harvesting in mid-September, harvesting melon for about 28 days, harvesting 4 to 5 batches of melon, generally harvested at the end of September or early October . Melon flat round, ripe, silvery white skin with light yolk, white-green flesh, tender meat, crisp, fragrant, sweet, central sugar 15 ~ 17. A single melon weighs about 400 grams, a large one can reach 0.8kg, and the output is 1500 to 1800kg per 667 square meters. Calculated according to the local average wholesale price of 1.80 yuan/kg, the deducted cost and fee income can reach 2000 to 3,000 yuan, and the economy Higher efficiency.
2, cultivation techniques
2.1 Cultivate strong seedlings In the local area, generally in mid-July, a small sunshade shed is set up near the selected sweet melon plot, and nutritious bags are generally used for breeding. The nutritious soil is made of fertile garden soil or rice field without cultivating melons. After sieving, 500 kg of top soil plus 10 kg of calcium magnesium phosphate fertilizer are mixed well, and the humidity is held in hand to disperse into a nutrition bag. Seed treatment mostly uses clean water soaking seed method, that is, after soaking the seeds in warm water of 30°C for 7-8 hours, washing them and draining water, and then packing them with clean cotton gauze, performing indoor germination, and washing seeds 1 to 2 during the period. The second time, until 2/3 seed dew is broadcasted in prepared nutrition bags, one for each bag, and the depth of cover is 0.5 cm. Then the nursery bag is evenly discharged on the constructed seed bed and the seedlings will be produced within about 4 to 5 days. During the nursery, according to the weather conditions, seedlings growing condition timely ventilation and watering to ensure that the melon seedlings need strong temperature and humidity.
2.2 Apply base fertilizer should choose deep soil, soil is more fertile, well-drained sandy loam soil, the former is rice, combined with ploughing every 667 square meters to spread high-quality organic fertilizer 1500kg, 45% 50kg compound fertilizer, lime 75kg, Leveling fine. 2~3 days before transplanting, combined with whole pod urea, 5kg, 45% potassium sulfate ternary compound fertilizer 20kg, borax 1~1.5kg, phoxim or thiosulfuron poisonous soil 10kg, whole surface width 1.8~2m , The width of the channel is 20cm, and the height is 20 to 25cm. The surface should be flat, clean, and fine. Use 667 square meters of 48% diammonium EC 150 to 200ml to dilute 50 to 60kg evenly to plant the alfalfa, cover the plastic film. spare.
2.3 timely colonization When the seedling age is about 15 days, or when the melon seedlings 2 leaves a heart can be transplanted, transplanting 7 to 8 days before the hardening seedlings, seedlings must be soaked with water the day before, in order to facilitate soil transplanting. When planting, plant one row per row, planting 50-60cm planting at a digging hole, planting about 600-700 plants per 667 square meters, and then mixing 600 times of 50% carbendazim or cockerson, and 5% of decomposed urine water. Liquid rooting and covering with flat surface is preferable.
2.4 Strengthening field management
2.4.1 Timely picking and topdressing When the melon seedlings have 4 true leaves, they must pick them up in time. Each of them should keep 4 healthy vines and evenly guide them to the square. When the vine spreads 18 to 20 true leaves, Topping, each cranberry stays 3 to 4 more sun vines, Sun Man sitting melon, leave 2 to 3 pieces of leaflets before the melon topping heart, generally each plant can stay 4 to 5 melons. During the growing period, the excess vines, vines, flower buds, and old leaves and diseased leaves of the stems should be promptly removed. First, the nutrient loss can be reduced, the fruit setting rate can be increased, and the melon expansion can be promoted. The second is to enhance ventilation and light transmission to reduce the occurrence of diseases. A total of 3 thin fertilizers were chased during the growth period. About 15 days after planting, 0.5% ternary compound fertilizer and 10% decomposed human urine mixed solution were used to promote the growth and extension of guajava seedlings. The second top-dressing is when the first batch of melon eggs size, root 1% ternary compound fertilizer and 15% decomposed human urine mixture. The third dressing was the second batch of melons sitting and then rooted with 1% ternary compound fertilizer and 20% decomposed human urine mixture.
2.4.2 Prevention and control of disease and insect pests and diseases in a timely manner Prevention should be the mainstay and timely prevention and treatment should be found. Xinhuihui melon has high resistance to wilt disease. The major diseases in summer and autumn cultivation are downy mildew and epidemic diseases, and the main pests are aphids and melons. From sowing to harvesting, spray 3 to 4 times of pesticides. Pesticides should be low, efficient, and safe. Spray a protective fungicide such as Jinggangmycin, chlorothalonil and other pesticides 2 to 3 days before transplanting. In the initial stage of downy mildew, spray 800 to 1000 times 72% Kelu or 500 times 58% metalaxyl manganese zinc. In the initial stage of the epidemic, spray 800 times liquid schizophrenia or 600 times liquid 64% antivirus scorpion; % imidacloprid 2000 to 2500 times solution, guava seedlings with 5% fipronil 2500 times or 1.8% efford 3000 times liquid foliar spray control effect are better. In short, according to the occurrence of pests and diseases timely spraying, spraying pesticides in the middle and late can add 0.3% potassium dihydrogen phosphate and 0.2% borax mixture or other foliar fertilizer 1 or 2 times.
2.4 Timely Harvesting Cultivation of New Silver Gourd in Summer and Autumn In general, it takes about 28 days to ripen from pollination to harvesting. In the management of melons, the first is to do a good job, the second is to do a good job to turn melons, to ensure the consistency of melon color, good traits, when the melon scent, showing maturity. Intrinsic properties can be harvested. Pay attention to stop spraying, foliar fertilizer and topdressing 7 to 10 days before fruit harvest; ensure that the melon is safe.
Xin Yinhui Melon Summer Cultivation Techniques
New Yinhui is a new generation of hybrid varieties improved by Yinhui. It is produced by Taiwan Zhaochun Enterprise Co., Ltd. and introduced by Fujian Nongjia Seed Co., Ltd. This city began to introduce test species in 2000, after 2 to 3 years of trials. This species is not only suitable for conservation in early spring and conventional planting, but also suitable for cultivation in summer and autumn. Its high yield, disease resistance, and commercial traits all perform well, especially for high resistance to wilt disease, and it is not easy to prematurely decline in later stages. On the other hand, it is welcomed by melon farmers. According to incomplete statistics, the area planted in the summer and autumn of this year reached more than 33 hectares. Due to the high prices, high economic benefits were obtained. The main points of the city's summer and autumn cultivation techniques are introduced as follows for reference by melon farmers.