What to Do If Napa Cabbage Won't Form Heads? The Latest Solutions Are Here
Napa cabbage is a vegetable that many people really enjoy eating, and it is also very common in our lives. Napa cabbage is a seasonal vegetable for winter, and its growing method is also very simple, but after many people plant it, the phenomenon of napa cabbage not forming heads appears. So why does napa cabbage not form heads? How can we prevent napa cabbage from failing to form heads? Let's take a closer look below.
1. Reasons Why Napa Cabbage Does Not Form Heads
There are many reasons why napa cabbage does not form heads, but the main reason among them is caused by low temperature and high humidity. Increased rainfall will trigger various diseases, affect the growth of napa cabbage, and not only cause napa cabbage not to form heads, but also possibly lead to plant rot and death. Secondly, improper fertilization, improper water supply, and improper pest and disease control are all reasons that cause napa cabbage not to form heads.
2. Prevention Methods
Since there are many reasons that cause napa cabbage not to form heads, there are also quite a few methods to prevent napa cabbage from failing to form heads. Let's take a look together below at its specific solutions.
Scientific fertilization: Applying fertilizer incorrectly will cause napa cabbage to only grow leaves without forming heads. Many people, when fertilizing, tend to apply too much nitrogen fertilizer to promote the growth of napa cabbage, but this is actually incorrect. During the planting process of napa cabbage, we cannot apply too much nitrogen fertilizer. Generally, potassium fertilizer and phosphorus fertilizer should be the main ones, and only a small amount of nitrogen fertilizer needs to be applied. About twenty days after planting napa cabbage, you can begin to increase the application, and topdress once every half a month. Secondly, when napa cabbage begins to form heads, we need to spray a foliar fertilizer about once every week, which can ensure the firmness of the napa cabbage head.
Regulating humidity: During the growth period of napa cabbage, a large amount of water is needed, but the water supply must be balanced and cannot be sometimes more and sometimes less. During dry weather, water once each in the morning and evening every day, but when continuous rainfall occurs, the excess water in the field must be drained in time, so as to avoid the leaf surface curling when napa cabbage forms heads. At the same time, in order to avoid water loss, we can also cover the field with a layer of straw, which can maintain soil moisture.
Controlling temperature: Napa cabbage is a vegetable produced in winter, so this also means that its cold tolerance is very good. At the same time, this also shows that it is not heat tolerant. So what we need to do is reasonably control the weather temperature. We can use the method of building greenhouses for planting, so that the temperature remains constant, and in this way it will not affect the growth of napa cabbage.
Preventing and controlling pests and diseases: If napa cabbage is harmed by pests and diseases such as viral disease, soft rot, diamondback moth, and aphids, then the phenomenon of not forming heads will also appear. Therefore, during the planting process, we should observe the leaf surface of napa cabbage. If pests and diseases are found, then timely prevention and control are needed. For specific medication, you can consult.
Manual head forming: Manual head forming is actually very simple, and many growers also understand it. This is also a method commonly used by many people. When napa cabbage does not form heads, many people will use straw or palm leaves to tie up the leaves of the napa cabbage, which plays an auxiliary role in head formation, and later the napa cabbage will also slowly form heads.
Based on the above, I believe everyone has gained some understanding of the phenomenon of napa cabbage not forming heads. The editor has also specifically introduced the reasons why it does not form heads and the solutions. In the future planting process, as long as you plant according to the correct process, basically the phenomenon of not forming heads will not appear.