Symptoms of a nitrogen deficiency seedling growth is not fast, thin and thin plants, thin and thin leaves, yellow-green or light green; mid-fertility nitrogen deficiency, early yellowing of the lower leaves, flower disk is small, vegetative organ growth was significantly worse, resulting in premature plant failure. The two potassium-deficient plants grew slowly, the leaves turned yellow, and brown spots appeared on the leaves. These spots eventually dried up and fell into thin flakes, falling and falling in oil content. After the three-deficient boron cotyledon was opened, the growth point was damaged or died, or the axillary buds germinated to form plants. The growth was not normal, the plants were short, and the stems had brown hooks. After the formation of the disk, the stems supporting the disk lose their ability to follow the sun, and some have low heads, some heads are overturned, the lower leaves are hypertrophy, dark green, the upper leaves are small and curly, the leaves lose their greenness, and the veins are prominent.
The etiology of sunflower plants is tall and requires more fertilizer than general crops. Each production of 100kg oil sunflower requires 7.44kg of nitrogen, 1.86kg of phosphorus pentoxide, and 16.6kg of potassium oxide; and for every 100kg of fruit produced by sunflower, 6.22kg of nitrogen is needed for the consumption of sunflower. Phosphorus 1.33kg, potassium oxide 14.6kg. The lack of nutrients in the production or the nutrient elements in the soil is in a non-absorbable state. The etiology of boron deficiency can be seen in the deficiency of cotton.
Control methods (1) Apply 667m2 of compost organic fertilizer 2000-2500kg, calcium citrate 20-30kg, potassium chloride or potassium sulfate 7-10kg or plant ash 50-75kg, but do not use ash in saline-alkali soil. (2) Seed fertilizer can be ammonium sulfate, urea, superphosphate, diammonium phosphate, potassium sulfate or potassium chloride, etc., but also mixed with a small amount of livestock and poultry manure, but not excessive, or easy to burn. Dosage: Nitrogen is 1kg per 667m2 of pure nitrogen, phosphorus is reduced to 1-1.5kg of phosphorus pentoxide, and potassium is about 2kg of potassium oxide. When applying, it should be noted that the seed and fertilizer should be separated to prevent affecting germination and emergence. (3) Top-dressing is dominated by nitrogen and potassium fertilizer is appropriate. As far as phosphate fertilizers are concerned, the effect of applying fertilizers is not high. The basal fertilizer and the sufficient amount of fertilizer are generally not required to chase seedlings. Most of the sunflowers planted in summer and autumn have no basal fertilizer and should be topdressed for the first cultivator. Each 667m2 topdressing urea 3-4kg or ammonium bicarbonate 7.5-10kg. Sunflower from the bud to the flowering period is the key period of topdressing, can be caught in the bud 7-8 before the beginning of topdressing ammonium bicarbonate or urea 7.5-10kg, potassium chloride 5-7kg, methods used more acupuncture, Dig a hole 6-9cm away from the base of the plant stem, cover the soil after fertilization, and apply a ditch. If necessary, it can also spray 0.2%-0.3% of potassium dihydrogen phosphate solution and 1% of urea solution per 667m2 during the budding and flowering period of sunflower until the grain filling stage, not only increasing production, but also increasing oil content.
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.
Blood System
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