First, there are more cloudy days. More cloudy days, lower temperatures, continuous low temperatures in the shed, leading to vegetable root injury, affecting the absorption of nutrients, showing symptoms of deficiency. In addition, even the lack of light in the cloudy day, resulting in crop malnutrition, carbohydrates can not be converted, the leaves are thicker and smaller, the roots (especially the root tip) are injured, brown, no new roots. If there is a big fat water management at this time, the vegetable roots are more likely to be absorbed, and the vegetables are bound to suffer from deficiency. At this time, spraying foliar fertilizer is the most effective solution. Second, the application of trace elements should not be used. In order to pursue high yields, some vegetable farmers have applied a large amount of fertilizer to the greenhouse, and neglected the application of trace elements, resulting in a general increase in nitrogen, phosphorus and potassium in the soil, and insufficient trace elements. Some vegetable farmers use excessive amounts of micronutrient fertilizers. Because of antagonism, roots absorb other elements and are inhibited, thus showing symptoms of deficiency. Third, the concentration of soil solution in the shed is too high. Due to the large-scale use of chemical fertilizers by vegetable farmers, the soil solution concentration is too high, the root system of the plants is poorly developed, and sufficient nutrient supply plants cannot be absorbed to grow, and the plants exhibit deficiency syndrome. Fourth, prevention is inappropriate. Some vegetable farmers see that the leaves of vegetables are yellow, and they think that they are lack of fertilizer, so they apply a lot of chemical fertilizers, and the results are counterproductive, leading to more and more serious diseases of vegetables. Therefore, the farmers should be given more guidance to distinguish the symptoms of various deficiency. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone The wrist can be said to be a very important but fragile joint in our body, but many people do not pay attention to the protection of the wrist in daily training.
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If we want to protect our wrists during training, we need to use wrist protectors. Wearing wrist protectors correctly can protect us from the risk of injury during training. For example, if the weight of the bench press is too large, it will cause excessive back pressure of the palm, which will easily lead to arthritis and other problems in the long run. The use of wrist protectors will actually help the wrist to reduce this force, To protect your wrist.
There is also a standard to determine whether the wrist guard is correctly worn. It is to see whether your hand can move freely as normal after wearing the wrist guard. Generally speaking, after correctly wearing the wrist guard, the flexibility of the wrist will be reduced, so as to better protect the wrist.
Vegetable yellow leaves may be deficient
Symptoms such as yellow leaves, small leaves, falling flowers and fruit drop are related to deficiency, and this phenomenon is spreading year by year. After expert analysis, there are four main reasons.