What about the poor effect of fertilizer?

Water-soluble fertilizer has obvious effect and advantages of saving fertilizer and water compared with traditional fertilizer. The products are sought after by vegetable and fruit growers. However, in the process of using water-soluble fertilizer, some farmers'friends will also report that the effect of water-soluble fertilizer is not good. Why on earth?

How to Distinguish High Quality Water-soluble Fertilizer

1.Watching Water Solubility

If the fertilizer is dissolved in clear water, if it is clear and transparent, it shows good water solubility; if the solution is turbid or even sediment, the water solubility is very poor and can not be used in drip irrigation system.

2.Smells

Good water-soluble fertilizers are made from high purity raw materials, without any flavor or a very light fragrance. Odor-smelling fertilizers either add hormones or have too many harmful substances. These fertilizers can be used quickly, but they are not good for disease resistance and sustainable yield and quality of crops.

3.Look at Registration Certificate Number

The Ministry of Agriculture stipulates that all fertilizer commodities must be licensed by one factory, and no borrowing certificate is allowed. Buyers can log on to the website of the National Fertilizer Quality Supervision and Inspection Center and enter the registration number to verify the authenticity.

How to use water-soluble fertilizer?

Common problems with poor results

1. Are there any problems with the efficiency of water-soluble fertilizers? As a quick-acting topdressing fertilizer, water-soluble fertilizer should not be applied at too long intervals. Water-soluble fertilizer efficiency time is 20 days, but this value is the average value, which can not guarantee that each crop absorbs nutrients in the same time. Therefore, the application time of water-soluble fertilizer should be determined according to the time of nutrient uptake by crops, which can not be generalized.

2. Are there any problems with the use of water-soluble fertilizers? Water-soluble fertilizer is simple to use. It can be directly applied to soil after the fertilizer is washed with water. But if the liquid hypertrophic water is directly applied to the root of vegetable, melon and fruit crops, the nutrients of fertilizer in water will inevitably accumulate to one place along with water, resulting in uneven distribution of nutrients, incomplete absorption of nutrients by crops, and the effect is naturally poor.

3. Understanding of water-soluble fertilizer is insufficient, and the wrong fertilizer is chosen! There are many kinds of water-soluble fertilizers on the market, such as root-promoting, seedling-strengthening, fruit-expanding, colouring, water-soluble fertilizers with a large number of elements, water-soluble fertilizers with medium and trace elements, and so on. However, the demand for nutrients varies from crop growth cycle to crop growth cycle. For example, the demand for nitrogen nutrients is higher in the early stage of crop growth, more potassium fertilizer is needed in the middle and late stage, and a certain amount of trace elements are also needed. Selecting suitable water-soluble fertilizer according to the law of crop nutrient demand and using fertilizer scientifically can effectively improve the efficiency of water-soluble fertilizer utilization, and avoid misuse and waste of fertilizer.

4.the quality of water-soluble fertilizer! Not all water-soluble fertilizers have the same effect! This point, most of the farmers'friends have realized! Like water-soluble fertilizers, prices vary. Some people choose to import water-soluble fertilizer, others choose domestic water-soluble fertilizer; others choose high-price water-soluble fertilizer, others choose low-cost water-soluble fertilizer, the final fertilizer effect is not the same!

(1)Selection of fertilizers according to irrigation facilities

Water-soluble fertilizer has an index called "water insoluble matter content". Generally, drip irrigation requires water insoluble matter content less than 0.2%, micro-sprinkler irrigation water insoluble matter less than 5%, sprinkler irrigation water insoluble matter less than 15%, and sprinkler irrigation water insoluble matter requirements are lower. Usually the lower the water insoluble content, the better the fertilizer efficiency, the higher the relative fertilizer price.
(2) Avoiding direct application
Secondary dilution method should be adopted. Ensure uniform fertilization, improve fertilizer utilization rate, according to the characteristics of continuous nutrient absorption by crops, reduce leaching loss caused by one-time large amount of fertilization, the appropriate amount of water-soluble fertilizer per mu is 3-6 kg.
(3)Grasp the details of drip irrigation and fertilization
When applying fertilizer by drip irrigation, first drip clear water, and then start applying fertilizer after the pipeline is full of water. The longer the fertilization time, the better. Drip clean water for 20 to 30 minutes immediately after fertilization, and drain all the remaining fertilizer from the pipeline.

In principle, the slower and more uniform fertilization, especially for elements with poor mobility in the soil (such as phosphorus), prolonging fertilization time can effectively improve the utilization rate of nutrients. In drip irrigation in dry season, it is suggested that the completion time of fertilization should be 2-3 hours.

(4)Avoid excessive irrigation

Generally, it can keep the soil moist within 20 to 40 centimeters of depth.
(5)About Mixed Use
As far as possible, single or mixed with non-alkaline pesticides, in order to avoid metal ions reacting to produce precipitation, resulting in leaf fertilizer or pesticide damage.