Causes of premature aging 1. Nutritional imbalances lead to premature aging: Due to the large cotton planting area and the insufficient application of organic fertilizers, most of the cotton fields rely on the use of chemical fertilizers to supplement the nutrients. The soil fertility lacks sufficient stamina and nutrition imbalances, and the cotton plants' resilience is significantly reduced, leading to cotton. Premature decline. 2. The farming system leads to premature senility: In recent years, the economic benefits of planting cotton have been considerable, the planting area in the cotton area has been expanded, and the crop rotation has become difficult. The phenomenon of heavy cropping has been very serious, resulting in an increase in the accumulation of soil bacteria, leading to premature aging. 3. Premature ageing caused by natural factors: Some cotton fields are low-lying, poorly drained, or in the middle and late periods, in case of heavy rain or continuous rain, the cotton fields have a long time accumulation of water, and the soil is heavy and sticky. It is easy to harden, resulting in poor cotton root development, difficulty in breathing, and absorption of nutrients. Blocked, leading to premature aging. 4. Premature failure caused by overloading; in the middle and late stages of cotton growth, it is at the same time of vegetative growth and reproductive growth, and the required water and nutrient content increase. Due to excessive ringing, the physiological load of the cotton plant is too heavy. The nutrient supply center transfers into the flower bell, and the vegetative growth is inhibited, leading to premature aging. Preventive measures 1. Nutritional adjustment: Before planting, try to apply organic fertilizer as much as possible, supplement chemical fertilizer during growth period, and especially reapply flowers and bells, and pay attention to the topdressing amount of phosphorus and potash while topdressing nitrogen fertilizer. It is not possible to apply nitrogen fertilizer alone to ensure a balanced supply of nutrients. In the later stage, the foliar spray fertilizer should be applied according to the growth of the cotton plant, and 1% urea solution or 0.3%-0.5% potassium dihydrogen phosphate solution can be used for foliar spraying, and the cotton fields with serious premature seneration should be sprayed every 7-10 days. Once, spray 3 to 4 times. Prevent premature aging of cotton plants. 2. Deep plowing: The best frontline of cotton is the grass crop, and it should be carried out with reasonable rotation. Generally, it will be separated by 3-4 years, so that the cotton will be reborn every year. If the planting area in the cotton area is large and the dumping is difficult, it can be solved by deep plowing and soil agent treatment to fully improve the soil structure, kill pathogens in the soil, promote robust growth of plants, and prevent premature aging. 3. Scientific management: In the middle and late period, the irrigation of cotton fields should adopt small ditch irrigation to avoid flood irrigation. After irrigation, the soil is easy to compact, and it is necessary to cultivate soil in time to create a favorable environment for root activity. For low-lying plots, timely drainage should be done in case of heavy rain or continuous rain to prevent water accumulation in the cotton fields for a long time. After the rain, timely cultivating tillage is beneficial to the respiration and absorption of roots, promoting the stability of cotton plants and preventing premature aging. 4. Reasonable load: According to the fertility condition and management level of the cotton field, a reasonable output index can be determined. Can not only pursue high yield, so that a large number of cotton plants to produce bells, the formation of small peach, premature aging. When a single plant reaches the predetermined target, it should be chemically controlled in time. Timely elimination of the top, group tips, conservation of nutrition, so that the plant towards the direction of robust, high-yield, prevent premature aging. A Urine Test Strip or dipstick test is a basic diagnostic tool used to determine pathological changes in a patient`s urine in standard urinalysis. A standard Urine Test strip may comprise up to 10 different chemical pads or reagents which react when immersed in, and then removed from, a urine sample. Ketone Test Strip,Urinalysis Reagent Strips,Urinalysis Reagent Paper,Reagent Strips For Urinalysis Changchun Medicon Technology Development Co., Ltd , https://www.jlmdk.com