In the later stage of wheat development, the roots enter the aging stage, the absorption capacity is weakened, and the root fertilization rate is very low. At the same time, some nutrients such as phosphorus are often in short supply. At this time, it is necessary to maintain appropriate levels of nitrogen, phosphorus and potassium nutrition to extend the leaf functional period. Prevent premature aging, enhance photosynthesis, and increase grain yield and quality. The top dressing can not only make up for the weakening of the absorption ability of the root system, but also can be used to directly spray the fertilizer onto the spray surface. It can also prevent late-maturing of the lust, caused by the oversupply of nitrogen fertilizer. It can be used economically and effectively. Significant.
What type of fertilizer should be applied to top dressings should be “looking at the sky and looking at the looksâ€. According to the specific conditions, “seeing the sky†should be based on the weather conditions. It should be done when there is no wind on a sunny day. The effect is not good, spray fertilizer can also be combined with the prevention and treatment of late diseases and pests: "see the ground, look at the long phase" is based on soil nutrient status, wheat growth and appearance to determine the type and quantity of fertilizer.
From the heading stage to the milk ripening stage, if the leaves are yellow in color and the premature aging wheat fields are defertilized, the focus should be on nitrogen fertilizers. Each acre with 50 ~ 60 kg 1% ~ 2% urea or 2% ~ 4% ammonium sulfate solution spray, the effect of increasing production is very significant, generally spray 1 to 2 times can increase production of 5% to 10% of wheat, high yield can increase 20 %about.
In high-yielding wheat fields that do not have premature aging, nitrogen fertilizers are generally not topdressed; cereals that are likely to be late-maturing may not be topdressed with nitrogen fertilizers. In these two types of wheat fields, the concentration of 0.2% to 0.4% of potassium dihydrogen phosphate solution or 5% of turfgrass gray water should be sprayed with a concentration of 50 to 60 kilograms per mu, which can achieve a certain increase in yield. According to the test, the grain weight can generally be increased by 1 to 3 grams, with an increase of 5% or more, and a high yield of about 15%.
For phosphorus-deficient wheat fields with more nitrogenous fertilizers, spraying of 2% to 4% of superphosphate solution, or 0.2% to 0.3% of potassium dihydrogen phosphate solution per acre of 50 to 60 kg, can also be used to promote grain filling. Increase the effect of 1000-grain weight. The middle and low yield wheat fields can be sprayed with nitrogen and phosphorus, which has a very obvious effect on promoting grain filling and delaying plant senescence.
To listen carefully to the weather forecast, when there is dry hot wind, no matter what kind of wheat fields, promptly and quickly spraying potassium hydrogen phosphate or gray water and other plants, have the role of defense against dry hot wind.
Blood System:
Blood system is also called circulatory system.
For the treatment of diseases of the circulatory system:
According to the American Heart Association, cardiovascular disease is the leading cause of death in the United States. Because of its vastness and critical nature, it is one of the systems of the body most prone to disease.
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One of the most common diseases of the circulatory system is arteriosclerosis, in which the fatty deposits in the arteries causes the walls to stiffen and thicken the walls. According to the Mayo Clinic, the causes are a buildup of fat, cholesterol and other material in the artery walls. This can restrict blood flow or in severe cases stop it all together, resulting in a heart attack or stroke.
Stroke involves blockage of the blood vessels to the brain and is another major condition of the circulatory system, according to Mitchell Weinberg of the North Shore-LIJ Health System. [Risk factors include smoking, diabetes and high cholesterol," he noted.
Another circulatory disease, hypertension - commonly called high blood pressure - causes the heart to work harder and can lead to such complications as a heart attack, a stroke, or kidney failure, the NLM noted.
An aortic aneurysm occurs when the aorta is damaged and starts to bulge or eventually tear, which can cause severe internal bleeding. This weakness can be present at birth or the result of atherosclerosis, obesity, high blood pressure or a combination of these conditions, according to Weinberg.
Peripheral arterial disease (also known as PAD) typically involves areas of narrowing or blockage within an artery, according to Jay Radhakrishnan, an interventional radiologist in Houston, Texas. In addition, chronic venous insufficiency (also known as CVI) involves areas reflux (or backward flow) within the superficial veins of the lower extremities.
PAD is diagnosed with noninvasive testing including ultrasound, CT scan, and/or MRI. Ultrasound is the least expensive of these methods, but also gives the least amount of detail, as CT and MRI show a much higher degree of anatomic detail when identifying areas of narrowing/blockage within an artery. CVI is diagnosed with ultrasound as the venous reflux can be measured accurately by ultrasound, which ultimately guides treatment.
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