For the fruit coloring and sweetening period, many people like to use high nitrogen fertilizer in the fruit expansion period, high potassium fertilizer in the coloring period, and some only use pure high potassium fertilizer, nitrogen phosphorus and trace element fertilizer in the coloring period No, I don't know if this is the case for you. Let's analyze it below:
1. Use high nitrogen fertilizer in the fruit expansion period:
If we have applied enough nitrogen fertilizer in the early stage, and the compound fertilizer used has slow effect, if we use high nitrogen fertilizer at this time, it will cause the plants to grow vigorously, which will make the fruit not easy to swell, and the color will be worse in the later stage. Needless to say.
At this time, it is recommended to use water-soluble fertilizers with high potassium, low phosphorus and nitrogen, mainly liquid suspended water-soluble fertilizers containing organic matter, such as titanium carbon type with a content of 80-60-400, because this can balance the nutrition and can expand the fruit. It can promote fruit coloring, and can also protect the root system and condition the soil.
Therefore, when using high-nitrogen fertilizer during the fruit expansion period, you must first check the amount of nitrogen fertilizer applied in the early stage, and if you want to use water-soluble fertilizer with high nitrogen and high potassium, it is recommended to use a small amount of fertilizer, which is not easy to cause excessive nitrogen.
2. For pure high-potassium fertilizers, it is easy to cause excessive potassium to affect the absorption and utilization of other elements, and it is even more difficult for the fruit to expand and color. Therefore, the proper use of pure high-potassium is enough, and it must not be used blindly.
3. For trace elements that are not used, this is actually similar to excessive potassium fertilizer to inhibit the supplementation of elements. Because the fruit is expanded and sweetened, it needs a variety of nutrients to complement each other. Therefore, if the plant lacks these elements, such as: boron, calcium, magnesium , Zinc, etc. will also affect the fruit expansion and fruit color.
Through the above analysis, in fact, fertilization during the fruit expansion and fruit coloring period can be used to maintain a balanced nutritional supplement, conditioning and maintenance of the soil, and fertilization is also very simple. The titanium-carbon suspended water-soluble fertilizer that can take root and support the soil is applied underground. If the soil is hardened seriously, use microbial bacteria Fertilizer, foliar spraying of trace element fertilizers of polypeptide boron calcium magnesium zinc iron polyglutamic acid type, these two are good, generally fruit expansion and fruit coloring and sweetening will not be bad.
