The use of water-soluble fertilizer for rice and the skills of rice fertilizer are as follows:
First, how to use:
Determine the amount of fertilizer and the period of fertilization: According to the growth stage of the rice and the soil fertility, determine the amount of fertilizer and the period of fertilization. Generally speaking, in the early stage of rice growth, compound fertilizers with a relatively balanced balance of nutrients such as nitrogen, phosphorus, and potassium can be usedIn the middle and late stages of rice growth, fertilizers containing high phosphorus and potassium can be added in moderation.
Dissolve fertilizer: dissolve the selected fertilizer in water in a certain proportion, paying attention to the concentration and amount of fertilizer when dissolving.
Adjust the pH value of the solution: Different rice growth stages have different requirements for the pH value, which can be measured by using pH test strips or pH meters, and then adjusted by adding acid or alkali.
Second, fertilizer skills:
Bottom fertilizer application: Before rice transplanting, combined with the soil ploughing, the fertilizer is evenly spread to the field and deeply turned into the soil.
Top dressing: In the process of rice growth, nitrogen fertilizer and other trace element fertilizers should be applied in time according to the growth of rice. The type of top dressing is mainly heavy nitrogen fertilizer (the plot with insufficient phosphorus and potassium in the bottom fertilizer can be supplemented with an appropriate amount of phosphorus and potassium fertilizer), and the amount of nitrogen fertilizer accounts for about 30 of the annual nitrogen fertilizer amount.
Ear fertilizer application: about 25 days before the rice heading stage, ear fertilizer is applied in two times. The first time is when the tip of the 3 leaves of the rice is poured, and the second time is when the tip of the sword leaf of the rice is exposed. Ear fertilizer is mainly nitrogen fertilizer, and the amount of fertilizer can not exceed about 20-30 of the annual nitrogen fertilizer dosage.
The above is the use of water-soluble fertilizer for rice and the skills of rice fertilizer, for reference only. In practice, it is also necessary to make appropriate adjustments according to local climatic conditions, soil conditions and rice varieties.