Here, I want to remind vegetable farmers that when they find that plants are too weak to plant trees, they must carefully analyze the reasons and then treat them symptomatically. Then, apart from the lack of fertilizer, what other reasons will lead to the weak growth of plants?
Reason one: There are too many fruits left, and plants consume too much nutrition.
In the process of planting management, many vegetable farmers always try to keep as much fruit as possible, often because too much fruit is left and the plant load is too large, which leads to weak vegetative growth of plants. In this case, proper fertilization is necessary, but it can't solve the fundamental problem. Because the ability of plants to absorb fertilizer is limited, they can't absorb all the fertilizer applied. In other words, how much fertilizer is applied may not necessarily provide many fruits. Excessive fertilization will only lead to waste or root burning. If this happens, the most effective way is to thin the fruit and reduce the burden, so as to accelerate the vegetative growth of the plant and achieve the goal of changing from weak to strong.
The second reason: the leaves are too sparse and the photosynthetic nutrition supply is insufficient.
When vegetable farmers are thinning leaves, if the leaves are excessively thinned, the photosynthetic nutrition produced by the leaves can not meet the growth of plants and fruits, which will lead to the weak growth of plants. In particular, vegetable farmers who grow tomatoes often have this problem. In order to promote fruit color change, leaves are often thinned a lot. If this is the case, even adding fertilizer will not help, because plants are not short of fertilizer at all. Therefore, in order to solve this problem, it is the key to provide sufficient photosynthetic nutrition for plants only by reasonably thinning and leaving leaves.
Reason 3: Root system is injured and absorption capacity is blocked.
Another reason is that the roots of plants are damaged. When the roots of plants are damaged due to root retting, root burning and other reasons, the ability to absorb nutrients will become weak and trees will become very weak. In this case, blind fertilization can only be counterproductive. The correct solution is to cure it in time. Such as timely drainage to reduce humidity, increase ground temperature, timely hoe the ground, and irrigate the roots with seaweed extract and compound bacteria. Burning roots can reduce the concentration of fertilizer solution in soil by increasing irrigation properly, and irrigate roots with Aiduo and chitin to promote their growth as soon as possible.
Reason 4: The soil salinization is too heavy.
At present, there are many problems in the habit of using chemical fertilizers in some places. For example, a large number of chemical fertilizers are used as base fertilizers, and the dosage per mu far exceeds the needs of vegetable growth. Manure does not ferment and decompose after application, which leads to the increase of soil solution concentration and soil salinization. In recent years, white, red and green crystals or mosses have appeared on the soil surface, which is a prominent manifestation of soil salinization. The ability of vegetable roots to absorb water and nutrients is greatly affected. Vegetables are already "not enough to eat" How can they grow well? If we continue to apply chemical fertilizer at this time, it will inevitably increase the concentration of soil solution, making it more difficult for plants to absorb water and fertilizer, and the growth of plants will become weaker and weaker.
To solve this problem, we should first increase the application of organic fertilizer, ferment and decompose while applying manure, and reduce or even suspend the use of chemical fertilizer, so as to improve the soil and weaken salinization. Secondly, when fertilizer is used, it should be reasonably matched. Microbial agents, chitin, seaweed and other rooting and promoting products can be applied alternately with fully water-soluble macro-element fertilizers.