1. Symptoms of freeze-throat on seedlings After the walnut seedlings are frozen, the water mainly appears on the trunk of the seedlings, such as dehydration and shrinkage, yellowing of the formation layer, blackening of the pith and heart, and dryness of leaf buds.
2. Countermeasures after frost damage
(1) Seedlings can't grow nursery or indefinite seedlings, but they can slow down and grow. When the minimum temperature is stable above 0°C in the evening, apply nitrogenous fertilizer and early irrigation, increase the amount of fertilizer and the number of watering, and gradually reduce the dehydration phenomenon. Apply 20 kg of nitrogen fertilizer and 10 kg of phosphate fertilizer per acre. Apply 0.2% to 0.3% urea and potassium dihydrogen phosphate mixture for extra-root fertilization to promote seedling growth.
(2) Pingshuo: In the early stages of leaf development, the annual seedlings are left to stand on the ground at about 10-15 cm and the trunks will be flattened. After the seedlings germinate, they will stay weak and strong and cultivate the main trunk. The seedlings of the two-year-old seedlings should be cut off from being frozen or drained. Branches, and cut paint smear, lime sulfur, soil, plastic film, etc., all kinds of fruit trees and seedlings cut common application of this method.
(3) Cold-proofing wintering: Topping the branches before the end of July. In mid-August, resolutely stopping the water and controlling fertilizers to increase the degree of lignification. Before the mid-November of sandy loam soil and the viscous soil in late October, the winter water should be irrigated, and after the confluence, the annual seedlings should be buried in winter; the seedlings of the two-year-old should be raised before mid-November, and the root system must be ensured to be intact. Losses, with 50 strains as a bundle, stored in situ, ie, digging depth of 1.5 meters, length depending on the number of seedlings, seedlings root pads about 20 centimeters of river sand, the seedlings will be placed neatly according to bales, the base of sand (every other Insert a corn stalk at a distance of 1.5 to 2 meters to facilitate ventilation. Fill the river sand between the seedlings. After the upper part is covered with 30 cm thick river sand, evenly cover the straw or rice straw. Avoid tight seals, high groundwater level, and easy accumulation. The water plot serves as a seedling pit.
Decolorizing Agent
Effective Waste Water Decoloring Agent
This product is a quaternary ammonium cationic polymer.
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Product Name:
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Water Decoloring Agent
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Solid Content:
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50%~55%
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Component:
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Dicyandiamide-formaldehyde Resin
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Other Names:
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Decolorant;
Color Removal Agent;
Dicyandiamide-formaldehyde Resin Flocculant
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Certificates:
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ISO, SGS,BV
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Service:
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Trade Assurance protection for quality, shipment, payment
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Item
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water decoloring agent
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Appearance
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colorless or light-color sticky liquid
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Dynamic viscosity (cps,20°C)
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50-500
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pH (30% water solution)
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2.5~5.0
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Solid content % ≥
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50
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Note:
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our product can be made upon your special request.
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1. It is mainly used for waste water treatment for textile, printing, dyeing, paper-making, mining, ink, and so on.
2. It can be used for color removal treatment for high-colority waste water from dyestuffs plants. It is suitable to treat waste water with activated, acidic and disperse dyestuffs.
Application Method
1.The product shall be diluted with 10-40 times water and then dosed into the waste water directly. After being mixed for several minutes, it can be precipitated or air-floated to become clear water.
2. The pH value of the waste water should be adjusted to 6-10 for better result.
3. When the colority and CODcr are relatively high, it can be used with the help of polyaluminum chloride, but not mixed together. In this way, the treatment cost can be lower. Whether polyaluminum chloride is used earlier or afterwards depends on the flocculation test and the treatment process.
Decolorizing Agent,Effective Decolorizing Agent,Waste Water Decoloring Agent,Water Decolorizing Agent
Shandong Tiancheng Chemical Co., Ltd. , https://www.tianchengchemical.com