Wheat high-yield technology should be standardized, scientifically balanced fertilization to ensure the underlying species

High yield and cultivation techniques are closely related. In order to ensure the smooth development of wheat high-yield creation activities, the Shuyang County Agriculture Bureau has combined the years of experience in wheat seed management to develop the following high-yield cultivation techniques for wheat.

First, choose good seeds. In recent years, we have selected wheat varieties that have outstanding performance in Shuyang County, high yield and lodging resistance, strong resistance to stress, and generally have a yield of more than one kilogram per mu and have potential for increasing production. To use a purified and rejuvenated seed, it is best to use the original species to ensure purity. It is necessary to build a scale of production in a thousand mu of land and 10,000 mu, and lay the foundation for unified machine collection, unified acquisition and improvement of quality.

Second, improve the quality of the seeding. Agricultural science and technology personnel do a good job in supporting the application of seeding technology to ensure the safety of strong seedlings over the winter, is the basis for the implementation of standardized management.

1. High standard fine land preparation. The standard of fine land preparation is â€œdeep, clean, fine, real and flatâ€. It is necessary to vigorously promote the deep tillage of the machine, the depth of 7 to 8 inches, and the breaking of the bottom of the plow, especially the corn field returned to the field, must be deeply buried. After the machine is ploughed, the machine is smashed, fine, sturdy and sturdy, eliminating the dark and dark, picking up the roots, smashing the bottom, and smoothing the sputum, creating a good soil environment for wheat growth.

2. Scientific balance of fertilization. The principle is to re-apply organic fertilizer, stabilize nitrogen and phosphorus fertilizers, supplement potassium fertilizer, apply micro-fertilizer, and promote the application of balanced fertilization technology. It is required to apply more than 5 cubic meters of organic fertilizer per mu, 40-50 kg of formula fertilizer or 15-20 kg of urea, 50 kg of phosphate fertilizer, 8-10 kg of potassium chloride and 1 kg of multi-micro-fertilizer. Nitrogen, potassium and micro-fertilizers should be applied with the plow, and the phosphate fertilizer should be applied shallowly before the plow to improve fertilizer efficiency and utilization. Corn stalks should be returned to the field as much as possible.

3. Make sure that the foot is planted. The high-yield demonstration area in Puyang County is loam, and the water content of the 0~20 cm soil layer is not less than 18% when planted. If the above indicators are not reached, it is necessary to pour the bottom water or the drowning water according to the production conditions, so as to facilitate the realization of the whole seedling.

4. Appropriate amount of sowing. It is necessary to determine the sowing date and the sowing amount according to the characteristics of the variety, which is the key to breeding the strong seedlings before winter. In Shuyang County, the suitable period is from October 5 to 10, and the general acreage is 6-8 kg.

5. Do a good job in seed treatment. The seeds are sown for 1 to 2 days before sowing to increase the germination rate and germination potential; the seed coating technology and the mixed seed dressing technology of insecticide and fungicide are mainly promoted to prevent underground pests, promote seedling growth and prevent seedling diseases. When using 2.5 g of 10 grams of water, 250 grams of water, mixed with 10 kg of wheat, can effectively prevent wheat black embryo disease, sheath blight, should be promoted and applied.

Third, the scientific operation of fertilizer and water. 1. Management before the winter to promote the main, to achieve strong wintering. After emergence, the wheat field with the lack of seedlings and ridges should be replanted with the seeds of the same variety in time; the water should be poured in time according to the soil moisture; the cultivating should be strengthened, and the cultivating should be carried out 1-2 times before winter, which is more prosperous and more biased. Large wheat fields should be ploughed 2 to 3 inches in depth; from late November to early December, according to the soil moisture, the wintering water should be poured, the water should be poured finely, and the water should not be flooded, so that the spring and winter are resistant and the seedlings are guaranteed. Safe wintering.

2. The management of the greening period is mainly controlled, and the stable growth of the wheat seedlings is realized. Under the premise of strong seedlings overwintering, it is necessary to change the habit of large-scale water management in the greening period. If the soil is dry, only water is not fertilized; if the soil is better, only cultivating, no fertilizer and watering, to inhibit the growth of spring sorghum, to achieve stable growth; the growing field, the large population of wheat, before the rise of each acre with strong Fengan 40 ml or 15% paclobutrazol 50 g sprayed on water 50 kg to prevent late lodging of wheat.

3. From the jointing to the earing management to promote the main, to achieve strong stalks and large ears. After the nitrogen fertilizer is moved backward, the topdressing fertilizer is changed to the topdressing fertilizer in the late stage of jointing, and the high-yield and high-quality is sought. The amount of topdressing can be appropriately increased. In the middle and late stages of jointing, 15 kg of urea was applied to the soil, and then water was poured.

4. Post management. In the later stage of wheat, the grouting water should be poured. The grouting water should be sooner rather than later. Usually, the grouting water is poured after the heading and flowering to ensure the wheat grouting, careful pouring or no pouring of wheat yellow water.

5. Do a good job of foliar spray fertilizer, anti-aging and weight gain. 15 to 20 days after the flowering, 1 to 2 foliar sprays are applied, and 1 kg of urea plus 200 g of potassium dihydrogen phosphate per acre is sprayed with 50 kg of water to increase the number of kernels and increase the 1000-grain weight.

Fourth, timely control of pests and diseases. In the plot where the spring sheath blight occurs, the acre is sprayed with 12.5% â€‹â€‹of the fruit and 15 to 20 grams of water and 30 kilograms of water. Timely prevention and control of powdery mildew, rust, scab, aphids and other pests and diseases, time should be sooner rather than later, in order to improve control.

Fifth, harvest at the right time. High-yield wheat should be harvested at the end of waxing. After the harvest is late, it is easy to cause the U-turn to fall or the rain, and the grain weight, grain color, yield and quality are degraded. Promote the machine harvest, combine harvester harvest to prevent mechanical mixing, and achieve the return of the particles.

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Check Valves

A ball check valve is a check valve in which the closing member, the movable part to block the flow, is a spherical ball. In some ball check Valves, the ball is spring-loaded to help keep it shut. For those designs without a spring, reverse flow is required to move the ball toward the seat and create a seal. The interior surface of the main seats of ball check valves are more or less conically-tapered to guide the ball into the seat and form a positive seal when stopping reverse flow.

Ball check valves are often very small, simple, and cheap. They are commonly used in liquid or gel minipump dispenser spigots, spray devices, some rubber bulbs for pumping air, etc., manual air pumps and some other pumps, and refillable dispensing syringes. Although the balls are most often made of metal, they can be made of other materials, or in some specialized cases out of artificial ruby. High pressure HPLC pumps and similar applications commonly use small inlet and outlet ball check valves with both balls and seats made of artificial ruby, for both hardness and chemical resistance. After prolonged use, such check valves can eventually wear out or the seat can develop a crack, requiring replacement. Therefore, such valves are made to be replaceable, sometimes placed in a small plastic body tightly-fitted inside a metal fitting which can withstand high pressure and which is screwed into the pump head.

There are similar check valves where the disc is not a ball, but some other shape, such as a poppet energized by a spring. Ball check valves should not be confused with Ball Valves, which is a different type of valve in which a ball acts as a controllable rotor to stop or direct flow.

A diaphragm check valve uses a flexing rubber diaphragm positioned to create a normally-closed valve. Pressure on the upstream side must be greater than the pressure on the downstream side by a certain amount, known as the pressure differential, for the check valve to open allowing flow. Once positive pressure stops, the diaphragm automatically flexes back to its original closed position.

A swing check valve or tilting disc check valve is check valve in which the disc, the movable part to block the flow, swings on a hinge or trunnion, either onto the seat to block reverse flow or off the seat to allow forward flow. The seat opening cross-section may be perpendicular to the centerline between the two ports or at an angle. Although swing check valves can come in various sizes, large check valves are often swing check valves. The flapper valve in a flush-toilet mechanism is an example of this type of valve. Tank pressure holding it closed is overcome by manual lift of the flapper. It then remains open until the tank Drains and the flapper falls due to gravity. Another variation of this mechanism is the clapper valve, used in applications such firefighting and fire life safety systems. A hinged gate only remains open in the inflowing direction. The clapper valve often also has a spring that keeps the gate shut when there is no forward pressure. Another example is the backwater valve (for sanitary drainage system) that protects against flooding caused by return flow of sewage waters. Such risk occurs most often in sanitary drainage systems connected to combined sewerage systems and in rainwater drainage systems. It may be caused by intense rainfall, thaw or flood.

A stop-check valve is a check valve with override control to stop flow regardless of flow direction or pressure. In addition to closing in response to backflow or insufficient forward pressure (normal check-valve behavior), it can also be deliberately shut by an external mechanism, thereby preventing any flow regardless of forward pressure.

A lift-check valve is a check valve in which the disc, sometimes called a lift, can be lifted up off its seat by higher pressure of inlet or upstream fluid to allow flow to the outlet or downstream side. A guide keeps motion of the disc on a vertical line, so the valve can later reseat properly. When the pressure is no longer higher, gravity or higher downstream pressure will cause the disc to lower onto its seat, shutting the valve to stop reverse flow.

An in-line check valve is a check valve similar to the lift check valve. However, this valve generally has a spring that will 'lift' when there is pressure on the upstream side of the valve. The pressure needed on the upstream side of the valve to overcome the spring tension is called the 'cracking pressure'. When the pressure going through the valve goes below the cracking pressure, the spring will close the valve to prevent back-flow in the process.

A duckbill valve is a check valve in which flow proceeds through a soft tube that protrudes into the downstream side. Back-pressure collapses this tube, cutting off flow.

A pneumatic non-return valve.

Multiple check valves can be connected in series. For example, a double check valve is often used as a backflow prevention device to keep potentially contaminated water from siphoning back into municipal water supply lines. There are also double ball check valves in which there are two ball/seat combinations sequentially in the same body to ensure positive leak-tight shutoff when blocking reverse flow; and piston check valves, wafer check valves, and ball-and-cone check valves.

Check Valves, Water Check Valves, Brass Check Valves, Sanitary Check Valves

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