Peanut high-yield disease prevention

First, the bacterial wilt of peanut

The disease occurs mostly from the peanut seedling stage to the pod-forming stage. The spring peanuts are from May to June, and the summer peanuts are from September to October. The incidence rate is heavier. The susceptible plants initially sag, and then the leaves of the whole plant sag, but the wilted leaves can still maintain a turquoise color. The stems are cut open, and the transporting tissue near the ground can be seen to have turned brown. At the broken incision, the dirty white bacteria flowed out, and the diseased plant was pulled up, and the roots had rotted to become dark brown. The control measures are as follows:

1. Reasonable rotation, rational rotation with non-parasitic crops, such as peanut and corn rotation to eliminate pathogens in the soil;

2. Select resistant varieties such as â€œBaisha 1016 Seedâ€;

3. Improve soil, pay attention to drainage, apply more decomposed organic fertilizer, when planting peanuts, 667 square meters of planting wood ash 50kg ~ 150kg, 12% calcium magnesium phosphorus 20kg ~ 30kg, can promote healthy growth of peanuts, improve disease resistance;

4. Chemical Control

1 When peanuts are planted, it can effectively control the occurrence of peanut bacterial wilt by using green enjoyment No. 1 or fulvic acid seed dressing. The application method is to use 1g ~ 2g or fulvic acid 2g ~ 3g per kg of seeds. Mix well and sown, the control effect can reach 80%~90%

2 In the peanut seedling stage or in the onset period, the spraying effect is more than 90% with the King of Sandy King or 1000 times to 1500 times of the gold. The weight of the disease is 667 square meters when using 179 square meters of sand or 35g to 15kg~20kg. Rooting, the effect is very good.

Second, peanut leaf spot disease

Peanut leaf spot, which has brown spot and black spot. During peanut growth, it generally occurs that mixing occurs on the same plant or even on the same leaf. Brown spot disease occurs earlier, black spot disease occurs later, and the control measures are as follows:

1. Strengthen the field management, and remove the residual leaf disease plants in time after harvesting the crops to eliminate the source of the dyeing.

2. Rational fertilization, increase the application of calcium and magnesium fertilizers and potassium fertilizer to improve the disease resistance of peanuts.

3. Chemical control can control the spread of diseases, maintain a long green leaf for long-term, and prolong the time of photosynthesis:

1 Spraying 1500 times to 2000 times of the king of sand bacteria in the growth period 2 times to 3 times, with an interval of 15 days to 20 days, the control effect can reach 93%;

2 In the seedling period, 667 square meters with 0.5g of water and 15kg to 20kg of water, continuous spraying for 3 times to 4 times, each interval of 15 days to 20 days, the control effect is above 95%, at the same time, can prevent other diseases occur.

In addition, the strong anti-disease and increasing-yielding agents "Salmon King", "Everywhere" and "Huangyeqing" have a certain preventive effect on preventing the occurrence of peanut virus disease. In the prevention and treatment of diseases such as bacterial wilt and leaf spot, mixed spraying It can enhance disease resistance and increase production by more than 30%.

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Graphite is an elemental element of elemental carbon. Each carbon atom is surrounded by three other carbon atoms (arranged in a honeycomb-like hexagon) to covalently bond to form a covalent molecule.

Since each carbon atom emits an electron, the electrons are free to move, so the graphite belongs to the conductor. Graphite is one of the softest minerals, and its use includes the manufacture of pencils and lubricants. Carbon is a non-metallic element that is located in the second periodic IVA family of the periodic table.

The specific use of graphite

1, for refractory materials, including refractory bricks, crucible, continuous casting powder, casting core, mold detergent and high temperature materials.

Magnesium carbon brick refractory material is the mid-60s, developed by the United States; in the world of magnesium carbon brick has been widely used in steel, and has become a traditional use of graphite. Aluminum carbon brick aluminum carbon refractories are mainly used for continuous casting, flat billet from the pipeline of the protective cover, underwater nozzle and oil well blasting tube.

Made of graphite and refractory crucible and its related products, such as crucible, curved neck bottles, plugs and nozzles, etc., with high fire resistance, low thermal expansion, melting metal process, by metal infiltration and erosion But also stable, good thermal shock stability at high temperatures and excellent thermal conductivity, so the artifacts and its related products are widely used in direct melting metal process.

2, steelmaking

Graphite and other impurity materials can be used as carbonizers in the steelmaking industry. Carburizing uses a wide range of carbonaceous materials, including artificial graphite, petroleum coke, metallurgical coke and Natural Graphite. In the world of steel-making carbon-based graphite is still one of the main uses of earth-like graphite.

3, for the conductive material

Graphite in the electrical industry is widely used as electrodes, brushes, carbon rods, carbon tubes, mercury rectifier cathode, graphite gaskets, telephone parts, TV picture tube coating and so on. Among them, Graphite Electrode is the most widely used, in the smelting of various alloy steel, ferroalloy, the extensive use of graphite electrodes. The graphite used in the electrical industry is very demanding on grain size and grade.

4, for wear and lubrication materials

Graphite is often used as a lubricant in the machinery industry. Lubricants are often not used in high-speed, high-temperature, high-pressure conditions, and graphite wear-resistant materials can be 200 â„ƒ a 2000 â„ƒ temperature and at a high sliding speed (loom / s) without lubricating oil work. Many of the equipment that transport corrosive media, widely used graphite materials made of piston rings, seals and bearings, they run, do not need to add lubricants, graphite milk is also a lot of metal processing (wire drawing, pull tube) when the good lubricant.

5, for corrosion-resistant materials

Graphite has good chemical stability. After special processing of graphite, with corrosion resistance, good thermal conductivity, low permeability and other characteristics, and widely used in the production of heat exchangers, reaction tank, condensate, combustion tower, absorption tower, cooler, heater, filter Pumps and other equipment. These equipment for the petrochemical, hydrometallurgical, acid and alkali production, synthetic fiber, paper and other industrial sectors, can save a lot of metal materials.

6, for the atomic energy industry and the defense industry

Graphite has a good neutron deceleration performance, the earliest as a slowdown agent for atomic reactors, "uranium-graphite" reactor is currently used more of an atomic reactor. As the power of the atomic energy reactor in the slowdown material should have a high melting point, stable, corrosion-resistant properties, graphite can meet the above requirements.

7, for anti-scaling anti-rust materials.

Graphite can prevent boiler fouling. Tests have shown that adding a certain amount of Graphite Powder to the water prevents the surface of the boiler from scaling. In addition, graphite coated with metal chimneys, roofs, bridges, pipes can be anti-corrosion and rust.

8, graphite new use

1) Flexible graphite products. Flexible graphite, also known as Expanded Graphite, is the 1970s developed a new graphite products. 1971 US research success of flexible graphite sealing material, to solve the problem of atomic valve leakage, followed by Germany, Japan, France also began to develop production. In addition to this product has the characteristics of natural graphite, but also has a special flexibility and flexibility. Therefore, it is an ideal sealing material, widely used in petrochemical, atomic and other industrial fields, the international market demand growth year after year.

2) the production of semi-metallic friction materials. Since the 1970s, clutches and automatic liners have been widely used semi-metallic friction materials. Semi-metallic friction material is the graphite and metal powder, steel fiber, clay powder made of synthetic resin. These automatic lining can be used for high-speed equipment such as aircraft, trucks and off-road vehicles, and clutch pads.

Graphite

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Fengcheng Ruixing Carbon Products Co., Ltd , http://www.lnfcrxts.com