Dye is an organic substance that enables the coloring of fibers and other materials. Dye a wide range, according to the source can be divided into natural dyes (such as plant dyes, animal dyes and mineral dyes, etc.) and synthetic dyes (or artificial dyes). According to the molecular structure can be divided into azo dyes, anthraquinone dyes, phthalocyanine dyes, aromatic methane dyes, nitro dyes and so on. According to the application method is divided into acid dyes, alkaline dyes, sulfur dyes, reactive dyes, disperse dyes, direct dyes and so on. Dye has a color, but the color of the material is not necessarily a dye. Dyes must have chromophores and help chromophores. The dye in the ink should also have a water-soluble group such as a sulfonic acid group.
Natural dyes are dyes obtained from animals, plants and minerals. According to the source can be divided into: â‘ plant dyes, from some plants roots, stems, leaves and fruits extracted from the dye, such as extracted from indigo indigo (blue), extracted from turmeric curcumin (yellow (Dinar), etc.); (d) dyes, extracts from the animal's body, such as carmine extracted from the cochineal, etc .; (d) mineral dyes, dyes extracted from the colored non-ferrous minerals of minerals , Such as chrome yellow, ultramarine, manganese brown and so on. Because of the natural dyes and artificial dyes compared to the existence of many shortcomings, such as incomplete chromatography, application inconvenience, poor fastness, in addition to a few still use, the majority was eliminated.
Synthetic dyes, also known as "artificial dyes". Mainly by the coal tar (or oil processing) fractionation products (such as benzene, naphthalene, anthracene, carbazole, etc.) by chemical processing, sometimes called coal tar dyes. As the first few kinds of synthetic dyes made of aniline as raw materials, it is also known as "aniline dye." Compared with natural dyes, synthetic dyes and more types, chromatography complete, most colorful, washable and durable, and can be mass production. So the current so-called dye almost all refers to synthetic dyes. The dyeing products are one of the common forensic materials.
Pigment is a colored, black, white or fluorescent particulate organic or inorganic solid. In water, oil or other application medium does not dissolve, but can be evenly dispersed, and in the entire dispersion process from the physical and chemical effects of the media, still retain its unique crystal or particle structure. According to the chemical composition of inorganic pigments and organic pigments; according to the color is divided into white, red, yellow, black and other pigments; according to the source is divided into natural and synthetic pigments, natural pigments are mineral (inorganic) such as He Shi, cinnabar, , Realgar, etc., there are animal and plant (organic) such as rattan, cochineal red, synthetic pigments are also inorganic and organic two categories; according to the use of coloring pigments, physical pigments and functional pigments. Coloring pigments are inorganic and organic pigments that impart various colors to the application medium. The pigment is a pigment that does not have a hue force and no hiding power. It is mainly used to reduce product cost and improve the performance of paint, plastic, rubber and other products. Called the filler. Now has been processed into ultra-fine grain of natural products and synthetic products, due to the synthesis of impurities in the small, fine particles and according to the need for artificial synthesis and a variety of surface modification, it can be used to reduce the hiding power of the pigment (Such as titanium dioxide) and improve product performance, and now it is called physical (incremental) pigments more appropriate, most of the main varieties of natural pigments are processed natural minerals such as natural calcium carbonate, barite powder, talc Such as precipitated calcium carbonate, precipitated barium sulfate, synthetic silica, etc .; functional pigments are pigments that give products specific functions, And change the color of the temperature paint, with poisonous biological function of the antifouling pigments, in the dark glowing luminous pigments, to prevent corrosion of rust-proof paint, pearl luster pearlescent pigments and so on.
Paint in paint, printing, rubber, plastics, paper, fiber, ceramics and other industries widely used, the product can be decorative, opaque, durable or special features.
Dyestuffs And Pigments,Chinese Herb Extracts,As Acid Dyes,Stabilizer Of Plastic Products SHANDONG ZHISHANG CHEMICAL CO.LTD , https://www.zhishangchemical.com
1. Fertilizer treatment: Immediately after planting, the planting water should be poured immediately. After the planting, the seedling water should be poured in one week. After that, the seedlings should be sown. After 10 days, you will be able to grow the seedlings with water and fertilizer, and then water once every 6-7 days. In the flowering period, it is necessary to properly seedling the seedlings, and to cultivate and keep the sorghum. After the first melon is seated, watering and promoting it. During the fruiting period, it is advisable to pour water once every 5-7 days. Bitter gourd seedlings are not resistant to fertilizer, and topdressing should be thin. After the start of the melon, the fertilizer should be continuously fed, and the water should be combined and watered once every 10-15 days. Each time, 10 kg of urea or 15-20 kg of compound fertilizer should be used. At the peak of the results, 2-3 times of superphosphate should be added, 10-20 kg each time to prevent premature aging and delay the harvesting period. If the topdressing is insufficient during the fruiting period, the plant grows weakly, the side branches are thin, the leaves are yellowish, the melons are few, the melons are small, the yield is low, the quality is worse, and the bitterness is thickened.
2, the frame pruning: bitter melon stalks, it is necessary to frame the vines in real time, so as not to be damaged by the wind, because the female flowers of the bitter gourd side vines are produced later, the base side vines should be removed to show the superiority of the main vine results. Otherwise, the side vine grows prosperously, which not only squanders the nutrients of the plant, but also leads to madness, causing signs such as melon and premature aging. Generally, when the main vine grows to 50-70 cm, the whole vine is started, and all the side vines are removed from the base, leaving only the main vines on the shelf. After the main vine is put on the shelf, if there is no female flower on the side vine, the side vine will be removed from the base. If there is a female flower, the melon should be picked up in real time. In the late growth stage, in order to transmit light through the wind, the old leaves, diseased leaves, yellow leaves and tiny side branches should be removed in real time.
What kind of management work is needed after the bitter gourd is planted?
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