Four Key Points for High Yield of Spring Peanut

Deep plowing of land

Spring peanuts are planted in the fields, and deep plowing is preferred at the end of autumn and winter. Generally, the depth of plowing is 25-30 cm. Deep plowing should be combined with increasing fertilization materials. After winter plowing, the plowing should be carried out to prevent wind erosion. Deep plowing should be adapted to local conditions, winter plowing should be deep, and spring plowing should be shallow. Spring plowing should be followed by cultivation to avoid running through the wind.

Plastic film cover

The mulching of plastic film has functions of increasing temperature, regulating temperature, preserving waterlogging, lifting concrete, controlling waterlogging, improving soil physical properties and near-surface microclimate.

Technical points: (1) Use a suitable plastic film. Choose a regular polyethylene film, width 90 cm, thickness not less than 0.004 mm, summer peanuts can use black mulch or color film. (2) Specification film, sufficient for sowing. According to the film points, strict control of the quality of the film. The sown soil moisture is about 70% of the maximum water holding capacity.

Increase density

In the case of relatively stable yield per plant, it is most effective to increase the yield by increasing the planting density of peanuts.

Technical points: (1) Spring peanuts. For early-maturing medium-fruit varieties, the density is about 10,000 holes/mu, with double grains per hole (same below). Mid-to-late-maturing large fruit varieties are suitable for 0.8-0.9 million holes/mu. (2) Summer peanuts. Generally large peanut varieties should reach 10,000 holes/mu, small peanuts should be 1.1-1.2 million holes/mu, and summer live peanut density should be 1.1-1.2 million holes/mu. (3) Machine sowing film sowing specifications. The ridge distance is 85 centimeters, the ridge width is 55 centimeters, the ridge is planted with two rows of peanuts, the furrow is 30 centimeters, the small row spacing is 35 centimeters, the large row spacing is 50 centimeters, the hole distance is 16.5 centimeters, and 9500 points per mu.

Prevent premature aging

Premature ageing is a major obstacle to limiting the increase in peanut production. Measures must be taken in time to ensure high yields of peanuts.

Technical points: (1) Application of slow-release fertilizer. Increased application of organic fertilizer, controlled-release fertilizer and other slow-release fertilizers ensure that peanuts have good nutrient supply in the middle and later stages of fertility. (2) foliar spray fertilizer. At the later stage of peanut growth, foliar spray 1%-2% urea or 0.2%-0.4% potassium dihydrogen phosphate solution, or leaf fertilizer rich in NPK and microelements 2-3 times, about 1 week interval. (3) Flexible control. According to the flower growth 2-3 times control. (4) Strengthen the prevention and treatment of leaf spot disease. When the diseased leaf rate in the field reaches 6%-8%, spraying is started, spraying once every 10-15 days, and spraying 2-3 times. Commonly used agents include 72% agricultural streptomycin sulfate soluble powder, 1.5% polymycin wettable powder, 75% chlorothalonil wettable powder, and 50% carbendazim wettable powder.

Epichlorohydrin (ECH)

Epichlorohydrin, 3-Chloro-1, 2 - epoxypropene, chloropropylene oxide ,ECH .

Molecular Formula: CH2OCHCH2Cl, C3H5OCl

Properties: It is a volatile, unstable colorless liquid with irritating odor similar to chloroform and ether. Molecular weight is 92.85, density, 1.1806g/cm3, boiling point, 116.11°C, freezing point, -57.2°C, refractive index (nd20), 1.4382, flash point (open cup), 40.6°C, and ignition point, 415°C. It is slightly soluble in water, miscible with many organic solvents, and able to generate azeotrope with a variety of organic liquids.

Main Applications:
Epichlorohydrin is an important organic industrial chemical and a chlorine-consuming product in fine chemicals, mainly for producing epoxy resin, synthetic glycerin, epichlorohydrin rubber, nitroglycerine explosives, glass fiber reinforced plastics, and electrical insulation products, which are widely used in the chemical industry, light industry, transportation, medicine, electronics and other fields. It also can be used as solvent for cellulose ester, resin, and cellulose ether, and the raw material of plasticizer, stabilizer, surfactant, and chloroprene rubber.

Toxicity and Protection: It is highly toxic, absorbed through the skin, and irritating to skin and mucous membranes. In higher concentrations, it has the function of narcotism. When poisoning occurs, there will be eye irritation, conjunctivitis, rhinitis, lacrimation, cough, fatigue, gastrointestinal disorders, nausea and other symptoms. Serious poisoning may lead to anesthesia or even lung, liver or kidney damages. Lethal concentration of human beings is 20ppm. Lethal dose of rat is 5090mg/kg. The maximum allowable concentration in air is 5ppm (18mg/m3). Production equipment needs to be closed, air, circulating, and the operator, wear protective equipment. In addition, due to intense auto polymerization, epichlorohydrin can not be heated in the fire in case of container burst. As for reaction as reagent, it is appropriate to be diluted with inert solvent and slowly added.

Packaging, Storage and Transport:
As ferric chloride or stannic chloride can promote auto polymerization, epichlorohydrin should be stored in dry, clean iron barrel, 200kg each, and kept in a cool, ventilated, and dry place, away from fire and heat. Store and transport in accordance with the provisions of flammable toxic substances.

EPICHLOROHYDRIN SPECIFICATION DATA SHEET

Epichlorohydrin (Ech),Epichlorohydrin 106-89-8,99.9% Epichlorohydrin,High Quality Epichlorohydrin

Shandong Tiancheng Chemical Co., Ltd. , https://www.tianchengchemical.com