Matters needing attention in fertilization of watermelon

It can be said that the peak season of watermelon production is in July and August every year, when all kinds of watermelons can be seen all over the street, but at this time, we will find that many watermelons do not taste very good, some are hollow, or some have no moisture, some have a lot of moisture but no sugar, and some watermelons are too small and not full, so they can only be sold at a low price and can not make money. Some growers say that the yield is not high, and each seedling produces several melons. Today, the pro-agricultural network is here to share some problems that need to be paid attention to in the fertilization of watermelons, so that the melon fields can increase production and produce high-quality watermelons. Let's take a look.

1. Base fertilizer

Base fertilizer is the basis of any crop planting, and only by applying base fertilizer can the quality and yield be guaranteed, so the planting of watermelon is no exception. When applying base fertilizer, we need to apply fertilizer according to the soil fertility of the planting area. In general, the average amount of farm fertilizer, cake fertilizer, compound fertilizer and base fertilizer and nitrogen fertilizer is about 3,500 jin, 200 jin, 100 jin and 40 to 50 jin respectively. Sprinkle evenly on the whole land.

2. Qi Miao fertilizer

Qi seedling fertilizer is a thing to be done when watermelon seedlings break the soil and grow to 10 to 15 centimeters, because the speed of seed germination and growth is not suitable, the field looks uneven. So at this time, we have to apply appropriate amount of nitrogen fertilizer and urea to promote the growth of melon seedlings, although it can be spread directly, but the seedlings are relatively fragile, so we should be very careful, otherwise they will be burned to death. Therefore, it is generally best to try to irrigate nitrogen fertilizer and urea into the water, at the same time not too close to the root, the amount of nitrogen fertilizer should not be too much, about five to ten jin of nitrogen fertilizer and urea are needed per mu.

3. Strong seedling fertilizer

In general, strong seedling fertilizer can not be carried out until the melon seedling grows to 50 or 60 cm. When applying strong seedling fertilizer, the tip of the main watermelon seedling should be removed first, and then fertilized, which can promote the melon seedling to grow new lateral branches. and make the side branches grow stronger, more vitality, in order to improve the yield of watermelon, the amount of right and wrong should be more uniform, not partial application of nitrogen fertilizer or potash fertilizer. Therefore, about 10 jin of nitrogen fertilizer, 20 jin of potash fertilizer and 40 jin of compound fertilizer are needed on average per mu, and stirred evenly, then dig a small hole near the root of the watermelon, sprinkle an appropriate amount of mixed fertilizer into each hole, and then cover it with soil. finally, each plant is watered again to make nutrients more easily absorbed.

4. Fertilizer for promoting flowers

As the name implies, promoting flowering is to promote flowering, that is, we need to apply fertilizer a week before watermelon blossoms. at this time, we are usually based on phosphate fertilizer, and the nutrients needed during flowering are very large. if the nutrient is insufficient, it will lead to the phenomenon of falling flowers and fruit. in order to protect fruit, we need to apply enough nutrients, on average, 300 jin of phosphate fertilizer, 100 jin of potash fertilizer and 50 jin of compound fertilizer per mu. The most important thing is to spray some special fruit-protecting nutrient solution on the flowers at this time.

5. Strong fruit fertilizer

Wait until the watermelon is the size of an egg, and you have to carefully observe whether the fluff on its body is gone, then you can apply strong fruit fertilizer, early fertilization will lead to the death and fall of the watermelon. When applying strong fruit fertilizer, we should pay attention to the fact that we can apply a little less every time, and then topdressing it every ten days or so, and carry out it many times. This method of fertilization is the most correct. Generally speaking, strong fruit fertilizer is mainly potash fertilizer, which needs about 10 jin per mu on average, and a small amount of nitrogen fertilizer can be mixed at the same time. This can promote the expansion of watermelon and the precipitation of sugar.