Xu Xin Xu Zhanguo (Guanxian Agricultural Bureau Guanfeng Seed Industry Technology Co., Ltd.)

Guan County is a large agricultural county with annual wheat planting area of ​​about 1 million mu. From 2006 to 2007, in conjunction with the construction of the "Quality Wheat Variety Breeding Base" in our county, we carried out a multi-million-mu high-quality special wheat high-yielding cultivation technology demonstration project in Jiazhen, which was named Lianmai No. 18. After the inspection and acceptance by the expert group, the high-quality and high-efficiency demonstration field was 15,000 mu, the average number of ears per mu was 333,000, the average number of grains per panicle was 44.2, the grain weight was 47g, and the average yield per mu was 520.0kg, which was 380.7kg more than the average three years before the project was implemented. Increased production of 139.3kg, an increase of 36.6%.

1 Preparation before broadcast

1.1 Balanced fertilization, application of base fertilizer, fertility and fertility. Higher soil fertility can not only increase the yield but also improve the nutritional quality and processing quality of wheat. To achieve the target of 500-550kg per mu, we must base on high soil fertility and good fertilizer and water conditions, and pay attention to the maintenance of soil nutrient balance, and apply basic fertilizer in accordance with the principle of "combination of organic and inorganic materials and balance of macro and microelements." . According to statistics, the demonstration farm Mushi 4000kg of decomposed organic fertilizer, 40kg of diammonium phosphate, 15kg of urea, 10kg of potassium sulfate, 1-1.5kg of zinc sulfate, and 1.0kg of borax as the base fertilizer are applied to the bottom of the plow before cultivation.

1.2 appropriate planting. Suitable soil is the key measure for cultivating strong seedlings. The optimum soil relative water content for wheat emergence is from 75% to 80%. Poor lyricism takes various forms to ensure proper planting.

1.3 Deep plowing and improving the quality of soil preparation. Demonstration fields are replaced by rotary cultivators, cultivating depth of 23 ~ 25cm, no ploughing, cultivating and supporting, no clear dark urine, no overhead dark urn, to the Panasonic real. Breaking the bottom of the plough and expanding the amount of roots enhances the ability to store water and protect the soil.

L.4 Do seed treatment. The use of wheat seed coating agent coating, no coating to take seed dressing. 40% methyl iso-sulfuric acid for controlling underground pests, seed dressing at 0.2% of the seed amount; 20% of triadimefon or oxyrhadin for prevention of total erosion, sheath blight, and seed dressing of 0.15% to 0.2%; In the case of pests and diseases, one of the above-mentioned insecticides and fungicides may be selected, and each of them may be mixed and seeded according to the above-mentioned amounts to achieve both diseases and insects. Triadimefon has an inhibitory effect on the germination of seeds and should be increased by 10% when used.

2 appropriate sowing, improve the quality of sowing

2.1 sowing specifications. According to the characteristics of Liaomai No. 18, it is required to appropriately expand the width of the loquat, preferably 2.5 to 3.0m, and the loft width no more than 40cm, in order to make full use of the ground force and light energy. The average line spacing is generally 18 to 20 cm. Liaomai No. 18 has a plant height of 70.8cm, which is short and has a wide range of potential for single ear production. It is suitable for intercropping with intercropping. The land typed with wheat, cotton, and cotton can be used in “three-two”, “four-two” or “three-one” models. ", single line spacing can be properly reduced to 20 ~ 22cm.

2.2 timely sowing. Early seeding is easy to form Wang Miao, early wheat premature aging; late sowing before winter, small vegetative body, less photosynthetic products, poor root development, fewer tillers, can not form strong seedlings. Demonstration fields were planted before October 10th to achieve Miao Miao.

2.3 Determine a reasonable amount of sowing. Basic seedlings are the starting point for creating reasonable groups. Determining reasonable basic seedlings can effectively reduce control measures and reduce management costs. The high-yielding cultivation of Lianmai 18 is generally controlled at 160,000 to 170,000 plants per mu. High-fertilization lands are planted early in the appropriate period, and when the management level is higher, the lower limit is taken; otherwise, the upper limit is taken. Demonstration area acres of sowing is generally 10 ~ 12kg.

2.4 Improve the quality of sowing. At the time of sowing, we strive to achieve uniform seeding, consistent depth, loose soil cover, solid soil, and no shortage of seedlings.

Product List

Introduction

The most common inorganic flame retardants are the hydroxides or aluminium and magnesium. Aluminium trihydroxide (ATH) is by far the most widely used Flame Retardant on a tonnage basis. It is inexpensive, but usually requires higher loadings in polymers of up to more than 60%, because the flame retardant mechanism is based on the release of water which cools and dilutes the flame zone. Magnesium hydroxide (MDH) is used in polymers which have higher processing temperatures, because it is stable up to temperatures of around 300 C versus ATH which decomposes around 200 C.

Fine precipitated ATH and MDH (grain size < 2um) are used in melt compounding and extrusion of thermoplastics like cable PVC or polyolefins for cables. For use in cable, ATH and more often MDH are coated with organic materials to improve their compatibility with the polymer. Coarser ground and air separated grades can be used in liquid resin compounding of thermosets for electrical applications, seats, panels and vehicle parts.

A number of other inorganic substances show flame retarding effects and are used in commercial applications. Most of them are used as synergists i.e. they enhance the performance of other flame retardants or they are used for specific effects like the suppression of smoke formation. For example, borates are used as mixtures of boric acids and borax as flame retardants for cellulose (cotton) and of zinc borate for PVC and other plastics like polyolefins, elastomers, polyamides, or epoxy resins. In halogen-containing systems, zinc borate is used in conjunction with antimony oxide, while in halogen-free systems it is normally used in conjunction with aluminium trihydroxide, magnesium hydroxide, or red phosphorus. In some particular applications zinc borate can be used alone. Boron containing compounds act by stepwise release of water and formation of a glassy coating which protects the surface.

Zinc compounds were initially developed as smoke suppressants for PVC (Zinc hydroxystannate). Later it was found that they also act as flame retardants in certain plastics mainly by promoting char formation.

Intumescent flame retardant systems expand to produce foams. They are used as coatings not only to protect combustible materials such as wood and plastics, but also steel structures in buildings, because steel loses its strength when exposed to high temperatures in a fire. The intumescent effect is achieved by combining an acid source like ammonium polyphosphate, a source of carbon, compounds which release noncombustible gases for blowing the foam on thermal decomposition and resin binders to stabilise the foam.

Expandable graphite is manufactured from flake graphite by treatment with strong acids like sulphuric or nitric acid. The acid is trapped in the crystal layers of the graphite ("intercalated"). When it is heated, the graphite starts to expand up to several hundred cm3 per gram, forming a protective layer for the polymer. Expandable graphite is used in plastics, rubbers (elastomers), coatings, textiles and especially in polymeric foams. To achieve an optimum flame retarding effect, the use of synergists like ammonium polyphosphate or zinc borate is often necessary. The black colour of graphite limits its applicability in some cases.

Nanocomposites have been gaining increasing attention since the late 1990s as potential new flame retardants. Nanocomposites

are polymer layered silicates based on aluminosilicate clay minerals like montmorillonite, composed of layers with gaps (gallery spaces) in between. These silicates have the ability to incorporate polymers. Research with nanocomposites has focused on plastics like polymethylmethacrylate (PMMA), polypropylene, polystyrene, and polyamides. Nanocomposites particularly prevent dripping and promote char formation. Therefore, they have been used as synergists in some polymer / flame retardant combinations. However, they require special processing and for the time being are not considered to become viable stand-alone flame retardants.

Other inorganic fillers like talcum or chalk (calcium carbonate) are sometimes denoted as flame retardants, but they do not specifically interact with the ignition process. On the contrary, simply by diluting the combustible polymer they reduce its flammability and fire load.

Inorganic Flame Retardant

Inorganic Flame Retardant Additives, Inorganic Flame Retardant Polymers, Inorganic Flame Retardant Chemicals,Ammonium Polyphosphate

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