1. Fertilize at any time: The cultivation of crops is to plant plants artificially to obtain an organ of economic value. For example, we grow wheat, corn and rice food crops in order to get more high-quality kernels; planting cabbage, celery, cabbage and other leafy crops, the main harvest is its stem and leaf organs; as for tomatoes, cucumbers, apples For crops, what we need is the fruit. These economically valuable plant organs often differ in the types of nutrients and their proportions absorbed from the soil because of the different parts they grow. Wheat and corn have a large demand for nitrogen and phosphorus; cabbage, celery and other leafy vegetables prefer nitrogen and potassium; apples, tomatoes, cucumbers, etc. can not lack potassium and calcium. At the same time, the different growth stages of the same crop require different nutrients. The seedlings need more phosphorus. Before the flowering, a large amount of nitrogen and phosphorus are needed before flowering. Before the fruit begins to expand, there must be sufficient potassium. In addition, different soils or different farming history, production levels, etc., also have specific requirements for fertilization. However, many people do not pay attention to the real needs of these crops when fertilizing, and the choice of fertilization time and fertilizer type often depends on their own feelings, which is obviously wrong; 2, the dung water and water do not have to ask people: This is the farming experience left by our ancestors. In the era of lack of fertilizer, the key factor that restricts the level of crop yield is the guarantee of the quantity of nutrient supply. The nutrient variety of farmyard manure is high, but the content of each nutrient element is very low. Therefore, if crops have higher yield, There is no doubt that you have to "dung the water and work hard." However, today there are many types of chemical fertilizers and high levels of nutrients. If you fertilize, you can't copy this old saying. Otherwise, the consequences brought to us are not only a waste of money, physiological obstacles to crops, declining quality of agricultural products, deterioration of soil properties, and will be presented to us with the abuse of fertilizers; 3, do not pay attention to the compound fertilizer nitrogen, phosphorus and potassium ratio: compound fertilizer, there is a similar ratio of NPK 15:15:15, there are 25:5:15 similar high nitrogen, potassium and low phosphorus, there are 25: High-nitrogen and high-potassium such as 0:20, and high-phosphorus type such as 10:30:5. The reason why there are so many different types of compound fertilizers is to choose the right ratio according to the crop type and growth period to meet the real demand of crops. However, many people tend to ignore this point, which leads to the insufficiency of crops that are needed, but continues to increase without shortage; 4, do not understand the chemical properties of fertilizer: the same is the purpose of potassium supplementation, potassium nitrate is good water-soluble, it is more suitable to apply or spread during the growth of crops, but it is not suitable for bottom application; potassium sulfate is more suitable for bottom application, topdressing The fertilizer effect will come slower and is not suitable for flushing; the potassium dihydrogen phosphate leaf spray or flushing is more suitable. According to the chemical composition and processing technology of raw materials, compound fertilizer is divided into potassium sulfate type, chlorine-containing type, nitric acid-based type, etc. Crops such as celery, wheat and corn are not sensitive to chlorine. Considering the cost, chlorine can be used. Compound fertilizer, tomato, cucumber, potato and other crops are best changed to potassium sulfate or nitrate-based compound fertilizer. Among them, the potassium sulfate type compound fertilizer is preferably used as the base fertilizer, and the nitrate-sulfur compound fertilizer can be applied in addition to the base fertilizer. However, in production, it is not uncommon to apply ordinary potassium sulphate type compound fertilizer with poor water solubility; 5, the wrong way of fertilization: Changyan Road, deep application of nitrogen fertilizer, layered application of phosphate fertilizer. But today, many farmers, whether they are dealing with ammonium bicarbonate, urea or phosphate fertilizer, are watering the surface after spraying or directly applying fertilizer to the water. Let's not say that the quick-acting nitrogen fertilizers such as ammonium bicarbonate and ammonium chloride are applied to the surface and the ammonium nitrogen is easily lost. The nitrogen that can be absorbed by the plant roots is very small, often only about 10% of the applied nitrogen. The waste is serious. Urea itself cannot be absorbed by plants. It must first be converted into ammonium nitrogen with the help of microbial decomposition in the soil before it can be absorbed by crops. Soil microbial activity requires proper temperature and humidity. Imagine watering immediately after applying urea. How can microbial bubbles in the soil move in the water? The lack of timely conversion means that it cannot be absorbed quickly. The urea that has been sown on the surface is either carried by the water into the deep groundwater of the soil or gradually lost to the atmosphere, and the utilization rate is very low. 6. Inappropriate fertilization position: The specific part of the roots that absorb nutrients and water is the capillary roots, and the old roots have weak or no absorption capacity. These capillary roots are distributed on the nascent roots, essentially at the bottom of the root system, that is, in the lower part of the plough layer, or the corresponding lower part of the outer edge of the crown. However, when many people apply fertilizer, they tend to apply fertilizer to the base of the plant, even close to the stalk. This has the consequence that the fertilizer utilization rate is reduced, and the fertilizer is harmful. 7. Unclear meaning of base fertilizer and seed fertilizer: The base fertilizer is applied to the bottom of the soil layer and supplies the basic fertilizer for nutrient absorption during the whole growth period of the crop. The application amount is large, generally applied before the rotary tillage, or perennial fruit trees. Deep application in autumn. Fertilizer refers to the application of nutrients around the seed or seedling to supplement the crop seedling period. The application amount is small, and it is generally applied at the time of sowing or planting. However, many farmers are not clear about the difference between base fertilizer and seed fertilizer. They often apply a large amount of fertilizer when planting or planting. The result is low seedling emergence, low emergence rate, shallow rooting, and no resistance to cold and drought. 8. The method of chasing fertilizer is inadequate: topdressing is to supplement the nutrients needed by crops during the growth of crops. The method of top dressing is divided into soil application and foliar application. The soil application is divided into methods such as application, ditch application, drip irrigation, and flushing. The conditional place of drip irrigation or special fertilizing machinery is of course good. It is also good to choose a water-soluble fertilizer to apply. The hole has been applied. When the crop grows to the middle and late stages, the root system gradually ages, and the ability to absorb and transport nutrients decreases. At this time, it is best to use foliar spray to supplement the nutrients. In production, many farmers do not have this common sense. When tomatoes or cucumbers are close to pulling and the plants grow obviously aging, in order to increase the amount of harvest, they often continue to apply large amounts of fertilizer. In short, reasonable fertilization, pay attention to the selection of the appropriate fertilizer category, at the right time, the appropriate amount of application, simple and accurate application methods, the application of the best position and so on. Pond Monsta ,Pond Monsta Vacuum,Pond Monsta Vacuum Cleaning System,Vacuum Pool Cleaner Ningbo ProWay Optics & Electronics Co., Ltd. , https://www.proway-microtech.com
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