1、 Fertilization of papaya saplings

In addition to the base fertilizer, we also need to apply fertilizer frequently. Each time, the amount of topdressing is controlled at about 30 jin, which is usually based on quick acting fertilizer, such as quick acting nitrogen fertilizer, urea and so on.

2、 Fertilization of papaya trees

1. Basal fertilizer

Basal fertilizer is the basic nutrient supply for papaya growth, which is generally carried out after harvest or in spring. Each time fertilization is mainly used with rotten poultry manure and a small amount of phosphate fertilizer. It is better to add about a jin of lime during fertilization. Of course, if conditions permit, organic micro fertilizer can also be used as the base fertilizer, which has higher nutritional composition and better efficiency.

2. Growth fertilizer

Growth fertilizer is mainly to promote the growth of papaya branches and leaves, so that it enters the flowering stage as early as possible. Growth fertilizer is not achieved overnight. We need to carry out it several times, mainly using nitrogen fertilizer, once every half a month or so, five times in a row. The concentration of fertilizer is also gradually changing from thin to thick. Of course, in this period of time, we can also combine fungicide and foliar fertilizer together, so that the effect of fertilization is better.

3. Promoting flower fertilizer

When the growth fertilizer of papaya is used in place, the flower buds will appear slowly, and then we need to increase the amount of fertilizer. But in this period of time, we mainly used phosphate and potash to reduce the use of nitrogen. We mainly use p, K and N compound fertilizer before and after anthesis, in which the content of n is the lowest, and the amount of each tree is controlled at about 100g. Fertilization after anthesis is consistent with that before anthesis, which can maintain the growth of papaya and promote the differentiation of flower bud. In order to prevent papaya from boron deficiency, we need to spray borax properly.

4. Strong fruit fertilizer

When papaya fruit, we need to promote the growth of papaya fruit, and at this time, the top dressing has a great impact on the yield and quality of papaya. In general, we mainly use ternary compound fertilizer for topdressing, in which phosphorus and potassium are the main elements. The strong fruit fertilizer of papaya is slightly different from that of other fruit trees. It needs to be applied several times, usually once a month. The amount of each fruit tree increased gradually, but not more than one jin.