Now it is the high temperature rise, the pests and diseases of various vegetables are beginning to appear, and the medicinal root irrigation is a good way to treat pests and diseases. It is also being used by farmers friends in a wide range, although the medicinal roots are a line. The effective measures, but also very dangerous, must pay attention to when using, then what are the precautions for the filling of the medicine? Here is a detailed introduction to the contraindications of the medicine.
What are the precautions for filling the medicine?
Drug selection should be reasonable
To choose a highly targeted and effective fungicide , do not blindly use drugs, so as not to delay the timing of prevention, while reducing waste as much as possible.
Appropriate concentration
The fungicide should be mixed with humic acid liquid fertilizer or hormones with stimulating root development as much as possible. The concentration of the liquid medicine is generally not higher than 800 times, and the concentration of the soil liquid around the root of the vegetable is prevented from being too high, causing phytotoxicity.
Soil biology must be balanced
The selected biocide can not damage the biological population and ecological balance inside the soil after being applied to the soil. If the shed of the bacterial fertilizer has been applied, try not to use the bactericide to fill the roots to prevent disease, so as to prevent the beneficial microorganisms in the bacterial fertilizer from being killed, so that the bacterial fertilizer loses the fertilizer effect. If the vegetable has been diseased, it is necessary to use a bactericide to fill the root. Do not consider whether the beneficial microorganisms in the bacterial fertilizer will be damaged, so as to avoid the disease outbreak due to small loss.
Watering should not be done before rooting
First, because the root disease of vegetables has already occurred, if watering, the bacteria will spread with the running water, causing more dead trees.
Second, because watering easily leads to a decrease in soil permeability, causing hypoxia in the roots of vegetables, resulting in roots, reducing plant stress resistance, pathogens are more susceptible to infection, and the occurrence of dead trees is exacerbated. Therefore, it is not advisable to water before filling the roots.
It is not advisable to water immediately after root irrigation
Watering immediately after rooting will quickly dilute the liquid in the soil and reduce the effect of sterilization and disease prevention. Therefore, try not to water the water within a few days after the rooting with the fungicide. If there is water shortage, you can pour a small amount of water in the planting ditch. It is better to use 1/3 of the water surface to the ridge height. Never cross the ridge surface to avoid the concentration of the chemical solution in the soil being diluted.
Remedy for phytotoxicity should be timely
After irrigating with a bactericide, once the vegetables have symptoms such as wilting, yellowing, and stopping growth, they should be remedied in time to avoid further damage.
Remedial measures: First, quickly pour a clear water to dilute the concentration of the liquid in the soil; second, promptly use Aiduoshou or Yunda 120 spray to add roots to alleviate the phytotoxicity, prompt the roots to recover as soon as possible, and let the plants transfer Normal growth.
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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.
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