First, before stuffing seedlings and 15 days before planting, pick up the vegetable residues from the seedling shed and planting shed, spread fertilizers, pour the ground, and water, and patch the old shed film used in the previous year on the ground. The soil was sealed for 15 days for soil disinfection.
Second, after sealing the smoked shed film, add 3 kg of sulphur powder and 0.5 kg of dichlorvos per acre vegetable field before raising seedlings. Mix with sawdust, ignite and sterilize in a closed room for a day and night. Breeding or cultivating after odorless. In addition, in order to reduce the humidity in the greenhouse, chlorothalonil and other smoke agents should be used for disease prevention and control in the low temperature season.
Third, the resistance to use of low temperature, strong disease resistance of cucumber varieties, such as Zhongnong 26, Jinyou 35, China and the Netherlands on the 8th.
Fourth, the hot soup is soaked, that is, with a seed volume of 4-5 times the 55 °C warm water, constant temperature soaking 15 minutes, the seeds were sterilized, kept stirring, until the water temperature dropped to 30 °C, continue to soak 4-6 hours, namely Can water germination.
Five, then select resistant rootstock such as black seed squash, white seed squash or brown seed squash for grafting seedlings.
Sixth, strong seedlings are screened before planting, and strong seedlings are selected for planting, that is, the seedling age is about 30-35 days, the seedling height is 10-15 centimeters, the clover is one leaf, the leaves are complete, the size is moderate, the leaf color is dark green, shiny, veins Thick, petiole short, well-developed root system, no pests and diseases.
VII. Preservation is heat preservation, low temperature is the limiting factor for the success of cucumber production in greenhouses in winter. Therefore, we must clean the greenhouse film, apply reflective screens, artificial light, thicken the outer cover (double grass cover or insulation cover), and add Skirt film, installation of two curtains, entrance and exit of additional enclosures, top air vents to block, dig cold ditches, entrances and exits closed, greenhouse front cover corner insulation and other measures to improve the greenhouse temperature and light performance.
Eight, less or less watering, the use of under-membrane irrigation methods, can reduce the greenhouse humidity, adverse diseases, but also to maintain the soil moisture, planting 7 days after the first time pouring water, until the roots mining Do not water before harvest, avoid soil temperature reduction and seedlings leggy; low temperature water should be poured in the cold tail warmer, that is, choose sunny watering, cloudy snow days, when the cold does not pour; while the amount of watering should be small, should not Flood irrigation.
Nine, clever and clever fertilizer, combined with irrigation water for fertilizer, each cucumber after each topdressing special fertilizer 10-15 kg.
Ten, as soon as possible early harvest, to avoid the large melon and melon, the general melon cucumber melon strip length 28-30 cm, individual species can reach 33-35 cm.
API Powder (Active Pharmaceutical Ingredient)
Active Pharmaceutical Ingredients refer to the raw materials used in the production of various preparations. They are the effective ingredients in the preparations. They are various powders, crystals, extracts, etc., prepared by chemical synthesis, plant extraction or biotechnology, but Substances that the patient cannot take directly.
According to its source,Active Pharmaceutical Ingredients are divided into two categories: synthetic chemical drugs and natural chemical drugs.Chemical synthetic drugs can be divided into inorganic synthetic drugs and organic synthetic drugs. Inorganic synthetic drugs are inorganic compounds (extremely elements), such as aluminum hydroxide and magnesium trisilicate used to treat gastric and duodenal ulcers; organic synthetic drugs are mainly composed of basic organic chemical raw materials, through a series of organic Drugs made by chemical reactions (such as aspirin, chloramphenicol, caffeine, etc.).
Natural chemical drugs can also be divided into biochemical drugs and phytochemical drugs according to their sources.Antibiotics are generally made by microbial fermentation, which belongs to the category of biochemistry.In recent years, many semisynthetic antibiotics are the combination of biosynthesis and chemosynthesis.Among APIs, organic synthetic drugs account for the largest proportion in variety, yield and output value, which is the main pillar of chemical pharmaceutical industry.The quality of API determines the quality of preparation, so its quality standards are very strict. All countries in the world have formulated strict national pharmacopoeia standards and quality control methods for its widely used API
Active Pharmaceutical Ingredient,API powder,minoxidil,monobenzone
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