Recently, when the author visited the countryside, he discovered that some vegetable farmers had some misunderstandings about cucumber fertilization in greenhouses, thereby affecting cucumber production and planting efficiency. The major mistakes are summarized below. Misunderstanding 1: Use incompletely decomposed livestock manure. Some vegetable farmers believe that the better the effect of chicken manure is, the more misunderstood it is, and that there is almost no offensive odor in the decomposed chicken manure. Without fully decomposed chicken manure applied to the ground, after the second fermentation in the shed, it is easy to produce ammonia harm. After detaining the membrane, when the ammonia concentration in the air in the greenhouse reaches 5 mg/L, the cucumber can be damaged; when the ammonia concentration reaches 40 mg/L, rotten roots and burning seedlings can occur. In recent years, the phenomenon of burning seedlings caused by inadequate raw maturing has been widespread, so it should be paid attention by the vegetable farmers. Myth #2: Reapply basal fertilizer, neglecting the use of foliar dressings and trace element fertilizers. Foliar application can better compensate for the lack of trace elements. Trace elements in the irreplaceable role of other elements. Practice has proved that calcium, boron, sulfur, iron, manganese, zinc, molybdenum and other trace elements are very important for improving cucumber yield and quality. For example, when cucumber lacks calcium, cucumber roots are underdeveloped, growth points stop growing, leaf margins roll up and leaves do not stretch; when cucumbers lack magnesium, shoot growth stops, leaves yellow and white, leaf margin necrosis and chlorosis; The leaves did not grow normally and the shoots were clustered. These symptoms cannot be solved by the nitrogen, phosphorus and potassium in the basal fertilizer and must be solved by applying foliar fertilizer. Myth 3: Use quick-acting fertilizers and ignore long-acting fertilizers. Some vegetable farmers only pay attention to some available fertilizers in the fertilizer selection, especially some fertilization with hormones, high nitrogen content, and many hormones. After 1 to 2 days after flushing, there will be leaf hypertrophy and longevity. However, only long lotus will not produce fruit. It's counterproductive. Misunderstanding 4: Ignore the use of microbial fertilizers. Bio-fertilizer is through the life activities of microorganisms to improve the root nutrient environment, such as fixed nitrogen in the air, transform nutrients to promote plant absorption of nutrients, secrete hormones to stimulate plant root growth, inhibit harmful microorganisms and so on. Due to continuous cropping of cucumber in greenhouses for a long period of time, the soil-borne diseases are relatively heavy in recent years. It is necessary to use biological bacterial fertilizers to improve soils, control soil-borne diseases, and increase cucumber production. However, the application of biological bacterial fertilizers is not widespread at present. Due to the effects of temperature and soil pH, the use effects are not the same. The vegetable growers also have some misunderstandings about biological fertilizers. Myth 5: Focus on fertilization and neglect to use fertilizers more than once. Some vegetable plots save time and worry about the lack of cucumber yield. Therefore, when the base fertilizer is applied at a large amount, the nitrogen fertilizer is lost early and the phosphorus and potassium fertilizers are fixed by the soil. Therefore, a few small-scale fertilization methods should be adopted so that the previous use of fertilizers is not wasted and the cucumbers are not deferred during the later period. Air Cooler,Mini Air Cooler,Industrial Cooler,Industrial Air Cooler Hangzhou Zhongju air separation equipment manufacturing Co., Ltd , https://www.hzzjkfzz.com