Nowadays, there are greenhouse vegetables in many areas. Many vegetable growers say that after planting vegetables in their greenhouses, there will be signs of wilting and dead trees. This is mainly because root management is caused by improper management after planting. How to save them effectively? .
Greenhouse vegetable yellow leaf remedy
1. Promote roots
There are two main reasons for the root injury of wintering vegetables:
First, some vegetable agricultural fertilizers are unreasonable. If the disposable amount is too large or the manure is not fully decomposed, the roots of the vegetables should be burned. At this time, water should be watered as soon as possible, the concentration of fertilizer in the soil should be diluted, and the microbial agent-feric blue should be applied. .
Second, the watering at the low temperature is too large to cause roots. At this time, ventilation should be strengthened to reduce the humidity in the shed, and the cultivating loose soil should be combined to improve the permeability of the soil and promote the early development of new roots. For particularly severely injured plants, rooting agents and cytokinins can be applied.
2, raise leaves
While promoting root growth, leaf raising is an important measure to accelerate plant recovery. First supplement the nutrition of the leaves. If the root of the vegetable is injured, its ability to absorb nutrients is weakened, and the plant is prone to iron deficiency and zinc deficiency. It can be sprayed 2-3 times with zinc-containing iron-containing foliar fertilizer, or sprayed with cytokinin mixed nucleotide foliar fertilizer. In addition, attention should be paid to the prevention and treatment of leaf diseases.
3, open the head
The roots of the vegetables are injured, and the tops are definitely not shrinking. Therefore, it is recommended that the farmers should take timely measures to solve them. It can be sprayed with foliar fertilizer and plant growth regulator with open-leaf effect.
The above is about the remedial measures for the yellow leaves of greenhouse vegetables. The most important thing is to do root maintenance and leaf raising measures, so as to effectively ensure the survival rate and the strength of the seedlings.
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