The application method of irrigating with water is also called “fertilizing”, and it is generally a kind of top dressing that provides nutrients during the period of rapid growth of the crop. Since it is a supplementary fertilizer, it cannot replace basic fertilizers such as basal fertilization. However, because this method is convenient and fast, it is widely used in irrigated fields of vegetable fields and cash crops and special food crops.

Farmers in various parts of the country are accustomed to putting granular fertilizers such as solid compound fertilizer, urea, and potassium chloride in buckets or sprinkled directly on the heads of the canal when the farmland is irrigated. Fertilizers reach the roots of crops along with the flow of water. It is not clear whether it is dissolved. For example, the calcium rushed by farmers in the south and the ammonium phosphate rushed by farmers in the north will remain on the surface for a long time, and large urea will not be easily dissolved. When the temperature is high, ammonia volatilization will occur. Therefore, fertigation is different from irrigation and fertigation such as drip irrigation and sprinkler irrigation. Some local administrations even use large-scale flood irrigation to flush chemical fertilizers. This fertigation method of flood irrigation highlights a “chong” character, which easily causes nitrogen. A large number of losses will also cause the problem of low water use efficiency.

At present, the fertilization is mainly used in the vigorous season of growing vegetable crops, and is widely used in greenhouse cultivation and open field vegetables. Due to the rapid fertility of fertilization, it can be seen from 2 to 3 days to 3 to 5 days after flushing. It is reflected in the changes in leaf color and plant height, which is in line with the enthusiasm of some growers. Therefore, fertilization is necessary. It has been widely used for many years.

Considering comprehensively the agricultural production targets with high yield, high quality, high efficiency and taking into account of environmental protection, and the current situation of the lack of rural labor force, in order to give full play to the strengths of “fertilization and fertilization” to avoid its shortcomings, the technical essentials of “flooding and fertilization” are briefly described as follows:

The type of fertilizer that is properly selected for fertilization is only water-soluble fertilizer that can be applied with water. Urea, ammonia, ammonium sulfate and ammonium nitrate are commonly used in nitrogenous fertilizers; potassium and potassium sulfates are used in potash fertilizers, and potassium nitrate can also be used. Even phosphorus-containing ammonium phosphate and diammonium phosphate do not need to be flushed. Because the phosphate fertilizer has poor mobility after being dissolved, it is easily fixed and cannot infiltrate into the root layer with water. The best application method of phosphate fertilizer can only be layered buried in the soil in order to improve its utilization.

The single nutrient amount of fertilizing and fertilizing must be streamlined. The amount of pure nitrogen should be controlled at 2~3 kg/mu in the cultivation of high-yielding vegetables, especially the nitrate nitrogen should be controlled below 2~3 kg/mu, with a limited number of times. The amount of potassium fertilizer (potassium oxide) is generally between 2 and 4 kg/mu; otherwise, nutrient waste and losses are large. It will not only reduce the nitrogen fertilizer utilization but also cause pollution to water quality. Fertilization in the whole growth period is generally 2 times.

The period of fertigation is during the period of large crop growth if the vegetables are harvested after fruiting and picking the fruits. If the cabbage is in the filling phase, in the autumn planting, the temperature is decreased and the soil mineralization is decreased. Vegetable crops are also suitable for a large number of growing seasons.

The amount of irrigation water is controlled under the flood irrigation method to prevent flood irrigation, and when the canal irrigation, the depth of the ditch is suitable for the amount of water, so as to prevent the nutrients dissolved in the water from being lost to the water.

Many farmers like to use this top-dressing method and it is effective to use it. However, in order to pursue the effect of the surface, regardless of the cost, one-sided use of large amounts of nitrogen fertilizer, misuse of fertilization, will lead to vegetables, longevity, quality, fertilizer use efficiency, loss of nitrogen, increase soil salinization.

Some people break down granular high-concentration compound fertilizers and crush them; others use unprocessed and insoluble solid organic fertilizers or microbial preparations as fertilizers. These are not appropriate.

In short, we must master the following points in principle:

The method of fertilization should be applied in a timely and appropriate manner. It is mainly used for top dressing in intensive vegetable cultivation, and nitrogen and potassium are mainly applied.

There are four kinds of fertilizers that do not need to be flushed, one is not flushed with phosphorus, two are not flushed with granular compound fertilizers, three are not solid organic fertilizers, and four are not used for microbial preparations or fertilizers.

Fruit & Vegetable Powder

It is a professional supplier of Fruit & vegetable powder - Plant Extract : Organic Extract ; herbal extract ; plant Essential Oil


Now we have 3 GMP standard workshop, Meanwhile, the factory is equipped with the researching and quality inspection centre, with strong technology research and development strength. We also have 3 salesdepartments over 30 people and sell our products all over the world.


For customer`s needs, OEM service is also acceptable. If you have a good idea in new product production but lack of laboratory device and human resource, we are glad to solve this problem for you. Sincerely hope to strengthen exchanges and cooperation with friends from both home and abroad.



Fruit & vegetable powder , plant extract , Organic extract , Essential Oil

Xi'an Henrikang Biotech Co.,Ltd , https://www.henrikangbio.com