Hello folks! I am a farmer who has been working in the field of kiwifruit cultivation for many years, and today I would like to share with you those things about what fertilizer to apply during the second expansion period of kiwifruit. As we all know, in the process of kiwifruit growth and development, the secondary expansion period is the key stage to determine the size, quality and yield of the fruit, and the scientific and reasonable fertilization program is particularly important at this time.
After the kiwifruit enters the secondary expansion stage, the cells inside the fruit are active, the sugar accumulation accelerates, and the nutrient demand increases sharply. Therefore, choosing the right fertilizer type and application method can help the fruit to expand quickly and healthily, improving quality and yield.
Kiwifruit needs a lot of potassium during the secondary expansion period. Potassium can promote the transformation and accumulation of sugar in fruits, enhance fruit hardness, and improve stress resistance and storage and transportation resistance. Therefore, potash fertilizer is essential at this stage. Potassium sulfate, potassium nitrate and other fertilizers with high potassium content can be selected for application, and the proportion of nitrogen fertilizer should be controlled to avoid insufficient lignification of fruits due to excessive nitrogen, which will affect the taste and quality.
Phosphorus also plays an important role in fruit expansion. Phosphorus can promote root development, enhance the plant's ability to absorb nutrients, and play a positive role in the improvement of the internal tissue structure of the fruit. Phosphate fertilizers such as diammonium phosphate and superphosphate can be applied in an appropriate amount to meet the phosphorus demand of kiwifruit trees.
The demand for trace elements in kiwifruit during the secondary expansion period cannot be ignored. Trace elements such as boron, zinc and iron are of great help to improve fruit quality, such as boron can promote pollination and fruit set, zinc can enhance plant disease resistance, and iron can help chlorophyll synthesis and maintain leaf health. Under professional guidance, fertilizers containing trace elements, such as borax, zinc sulfate, ferrous sulfate, etc., can be appropriately applied.
In terms of fertilization methods, in addition to basal fertilizer and top dressing, top dressing outside the root can also be used, that is, foliar spraying. Through foliar spraying, water-soluble fertilizers rich in trace elements and amino acids can be directly absorbed by leaves, quickly replenish the nutrients required by plants, and improve fertilizer utilization efficiency.
When fertilizing, it is important to follow the principle of "small amount and many times" to avoid root burning or excess nutrients caused by excessive fertilizer application at one time, and at the same time flexibly adjust the fertilization plan according to the soil conditions, climatic characteristics and plant growth conditions of the orchard. In addition, keep the soil moist before and after fertilization to facilitate fertilizer dissolution and root absorption.
The fertilization of kiwifruit in the second expansion period is a delicate technical work, which requires our farmers to rely on experience, knowledge and scientific guidance to comprehensively use all kinds of fertilizers to achieve double improvement of fruit quality and yield. Let's use wisdom and sweat together to paint a beautiful picture of the kiwi harvest.