Correct Fertilization Methods and Key Technical Points for Pineapple

We also call pineapple "fengli" (bromeliad). Pineapple, like jackfruit, is a tropical fruit. Although jackfruit has higher nutritional value than pineapple, more people may prefer the taste of pineapple, because once ripe, pineapple gives off a fresh fragrance that is very pleasant to smell and makes people want to take a bite. In recent years, with advances in planting technology, the cultivation range of pineapple has expanded somewhat, so today Qiannong Net will teach everyone how to fertilize pineapple.

1. Apply base fertilizer heavily

Base fertilizer is the largest single application of fertilizer needed throughout the pineapple's entire growing period, because it must at least meet the pineapple's growth needs for a full year, so base fertilizer plays a very important role in the entire growth process of pineapple. Only when base fertilizer is applied sufficiently can pineapple yield be guaranteed. For base fertilizer, we generally use decomposed farmyard manure or organic fertilizer, and of course we can mix in appropriate amounts of nitrogen fertilizer, phosphate fertilizer and potassium fertilizer. Among these, phosphate fertilizer is used in relatively larger amounts, and we need to pay attention to reasonable combination, otherwise it will backfire.

2. Apply seedling fertilizer frequently

Pineapple seedlings need to grow to a certain stage before they bear pineapple, and their growing period requires at least six or seven months, so each fertilization amount can be smaller, but it must be applied frequently, which allows better control of the amount of nutrients needed for pineapple growth. For example, apply once when the pineapple seedling has grown about nine leaves, apply once when it reaches twenty leaves, and finally apply once before flowering. The first and second applications are mainly nitrogen fertilizer, with phosphate fertilizer and potassium fertilizer as supplements; the third is mainly potassium fertilizer, with phosphate fertilizer and nitrogen fertilizer as supplements. Be sure not to mix them up, because if the third application is biased toward nitrogen fertilizer, the flowering period will be delayed, and thus the best fruiting period will be missed.

3. Scientific flower fertilizer

If there are no problems with the seedling fertilizer, then the flowering period is generally around early December, so we can apply flower fertilizer at the end of November. Of course, it can also be applied in December, but if flower fertilizer is started at the end of November, it can promote the flowering period, increase the fruit-setting rate, and protect the fruit very well, greatly reducing fruit drop. We can mix urea and potassium fertilizer in a 1:1 ratio and apply it as irrigation, so that the fruit produced is relatively stable in size and looks very uniform.

4. Reasonable fruit fertilizer

Fruit fertilizer is a relatively key step, because it not only determines the yield and quality of pineapple this year, but also determines the resistance of the plants and the yield next year. Therefore, this fertilization must be scientific and reasonable, ensuring both this year's yield and increasing the plants' resistance. Under normal circumstances, fruit fertilizer is mainly potassium fertilizer, and an appropriate amount of boron fertilizer is sprayed, which can both achieve the effect of strengthening the fruit and promote ripening, shortening the growing period. Secondly, we can also spray an appropriate amount of gibberellin to ensure fruit weight.

5. Apply maintenance fertilizer heavily

Maintenance fertilizer is actually equivalent to the base fertilizer for the next year, so maintenance fertilizer needs to be applied heavily and must be applied sufficiently. We apply maintenance fertilizer by broadcasting one to two weeks after pineapple harvest, and the fertilizer amount is consistent with that of the base fertilizer, but this time it is mainly potassium fertilizer and nitrogen fertilizer mixed with water for irrigation, which is beneficial to the plant's absorption.