The use of wheat herbicides should be noted
The yellowing of wheat indicates that its growth is unhealthy. It has its own physiological factors, and it also has adverse environmental conditions or pests and diseases. It causes the wheat to grow normally. It shows that the leaves are yellow, the growth is weak, the roots are not well produced, and the resistance is poor. The general wheat seedlings with weak yellowing in production have the following effects:
1. Insufficient base fertilizer causes yellowing.
Generally, too early sowing, insufficient base fertilizer or low nitrogen content in the base fertilizer will cause yellowing of the wheat and the growth is not good. In addition, insufficient phosphate fertilizer will also affect root growth and tillering, resulting in yellowing of the tip and dark green leaves.
2, shallow shallow layer
Although the last crop stalk is returned to the field, although it can improve the soil fertility, if the amount of field is too large or not carefully adjusted, it may cause the plough layer to become shallow. In this living environment, the roots of wheat are not deep, and the supply of nutrients cannot keep up. It can't be avoided when yellowing occurs. Therefore, it is recommended that in the future, when encountering such a situation, it must be suppressed after sowing to avoid the occurrence of hollowness in the soil.
3. The deep influence caused by sowing.
The wheat is soaked too deep, the roots are not well grown, and the germination of the seedlings consumes too much nutrients, which leads to weak growth and yellowing of the plants.
4. The effect of straw returning to the field.
The amount of straw returned to the field is large, the distribution is uneven, or the tillage is too shallow, or the suppression is not true, the heat preservation and poor performance is poor, and it is easy to cause the wheat roots to hang, or the wheat is difficult to take root in the soil, and the nutrient water supply is insufficient, thereby causing yellowing. . In addition, there is no appropriate amount of nitrogen fertilizer, straw sapwood and excessive nitrogen fertilizer can cause yellowing of the leaves.
5. The effects of residual pesticides in the field in the previous season.
In particular, the use of nicosulfuron or atrazine in the corn field, if the amount is too large or accumulated more often, it will cause yellowing of the wheat, and the growth is not good.
6, the impact of pests and diseases.
Wheat stalks and wheat spiders can cause yellowing due to the absorption of leaf sap, and wheat root rot, sheath blight, leaf blight or total eclipse can cause yellowing. Rootworms such as golden worms or cockroaches can cause yellowing. In turn, it affects normal water and fertilizer drainage, and the growth becomes weaker, causing yellowing.
7, the rainy weather, the high humidity between the fields, and the effects of insufficient low-temperature illumination will also affect the growth of the roots, which in turn cause yellowing of the leaves.
The post-emergence herbicides of wheat are generally based on the ability of the wheat itself to decompose or resist the herbicides, thereby ensuring that the herbicides are weeded to ensure that the normal production of the wheat is not affected, and that the weed plants die.
However, if the wheat grows abnormally, its decomposition or resistance or resistance to the drug will decrease, especially if it is weak, or affected by pests or diseases, or the root system is not good, or the temperature is uncomfortable, it will be further reduced. The ability to break down the drug, drug resistance or drug resistance is reduced more.
At this time, if the herbicide is sprayed, it is easy to cause phytotoxicity, which will increase the yellowing of the leaves. In severe cases, the plants will die or not, especially the sensitivity of wheat to herbicides is not high, and it is better than the normal use of herbicides in wheat. The risk is multiplied.
If the herbicide residue causes yellowing, after spraying the herbicide, it will accelerate the yellowing and even death, which will have a serious impact on the later production.
Therefore, in order to ensure the wheat yield, the cause of yellowing should be analyzed in time after the yellowing of the wheat, and the symptomatic treatment measures should be taken to quickly upgrade the seedlings, so as to facilitate the removal of the herbicide according to the actual situation. .
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Specification size |
1220mm*2440mm |
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Surface Finish |
High UV coating |
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Thickness |
1-9mm |
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Color |
Customized colors |
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Hardness |
3H-6H |
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Materials |
PVC |
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Type |
PVC Marbling Table Top Panel |
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Installation |
Easy installation |
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Life Span |
15 years |
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Place of original |
China |
PVC Marbling Table Top Panel
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