In order to identify the different components in various water-soluble fertilizers, people generally use N-P2O5-K2O TE (trace element, or ME, micronutrient element) to represent the different proportions in water-soluble fertilizers. For example, 20-20-20 TE means that the total nitrogen content of this grade of water-soluble fertilizer is 20%, the content of phosphorus pentoxide is 20%, and the content of potassium oxide is 20%. TE means that fertilizers contain trace elements, and manufacturers generally state the content and form of trace elements in fertilizers in their technical manuals. The main trace elements added were boron, iron, zinc, copper and molybdenum, among which the chelated trace elements were the best. Because the absorption and utilization efficiency of chelated trace elements is about 40 times that of inorganic trace elements and is very safe, even if the addition amount is very low, there is no need to worry about the symptoms of crop deficiency, of course, there is no need to appear trace element poisoning, and there is no need to worry about the mixing of different elements will cause anti-effect. Some of the better products can also be supplemented with calcium, magnesium, sulfur and other medium elements according to the needs of the crop. Water-soluble fertilizers are not only formulated in a variety of formulations but also very flexible in the way they are used, generally there are three types:
1. Drip irrigation, sprinkler irrigation and soilless cultivation In some desert areas or places with extreme water shortage, as well as large-scale planting farms, as well as high-quality and high-value-added cash crop plantations, people often use drip irrigation, sprinkler irrigation and soilless cultivation technology to save irrigation water and improve labor productivity. This is called "water and Интеграцията на торовете ", тоест по време на напояване, торът е разтворен във водата, а поливането е и процесът на торене . В този момент хранителните вещества, необходими на растенията, могат да бъдат получени чрез водоразтворими торове, които спестяват вода, торове, и труд. тор-пестене на вода, пестене на торове, спестяване на труд .
2. Soil watering When watering or irrigating through the soil, it is mixed in the irrigation water first, so that the roots of the plant can be fully exposed to the fertilizer, and the chemical nutrients are transported to the various tissues of the plant through the respiration crops of the roots.
3. Foliar fertilization dilute the water-soluble fertilizer and dissolve it in water for foliar spraying, or dissolve it in water with non-alkaline pesticides (most of the commonly used pesticides are non-alkaline) for foliar spraying, and enter the plant through foliar stomata. For some young plants or crops with poor root system, it is the best choice to correct the Симптомите на дефицит, които значително подобряват ефективността на абсорбцията и използването на торовете и спестява транспортния процес на растителни хранителни вещества в растението .
