At present, the first water of wheat and the first package of wheat have basically ended, there are many friends to consult the best time for the second water and the second package, the first watering or the first spray package? In fact, about the second water and when to spray the second package, I have talked to you before, since there are friends to consult, today I will talk to you in detail about this issue.
As the temperature continues to rise, the growth of wheat is also very rapid, and wheat will enter the flag period in the next few days. As for when is the best time to water wheat for the second time, combined with most plots, it is generally before and after the valley rain solar term, that is, before the wheat flag period to the flower, because this period is the last time the wheat takes root, only the root system is developed to deliver more nutrients, so that the wheat grows more vigorously and the yield is higher. If it is said that the wheat root system has begun to gradually senesce after the flowering period, the absorption of water nutrients is limited, not to mention that if the amount of water is slightly large, it may lead to hypoxic suffocation of the root system, and even aggravate the probability of lodging in the later stage and late maturity.
In addition, the second water at this period can also provide sufficient water for pollination and filling (pollination and filling period are not suitable for watering) Of course, if their plot is sandy soil and leakage and fertilizer leakage, and the first water has been watered before the sting, and now there is a drought in the field, then it is necessary to water in time, generally this kind of plot needs to be watered three times. In short, combined with most plots, the best time for the second water is from the flag picking period to before the wheat flowers.
Generally before and after the second watering, because the wheat flag picking period and the inverted two leaves can determine more than 90% of the wheat yield, and the flag picking period is also the strongest period for the leaves to absorb the liquid, spraying nutrients and fungicides can protect the flag leaves and the inverted two leaves from damage, and at the same time can supplement sufficient energy, which is also the foundation for the later flowering and grouting to lay the foundation.
Before answering this question, you need to understand that all nutrients need water. If the wheat has already been sprayed and wants to be sprayed, it must be watered within three days. If the second application of the yield increase package is applied after watering, the effect is also very good, which means that there must be enough water in the field to transport.
Finally, let's talk about how important the second package is in the whole growing period of wheat, and what kind of formula should be chosen? You know, the second package can increase the number of grains per ear and 1000 grains of wheat, which plays a vital role in yield. Generally speaking, in the later stage of wheat, the root system should be protected firstly, followed by sufficient water and nutrients, and finally the flag leaf and the inverted second leaf should be protected, so that the yield can be guaranteed at more than 90%.
As for what kind of formula to choose, it is recommended to choose pyraclostrobin, fluconazole, tebuconazole, etc., this triazole fungicide has strong systemic properties, which can prevent wheat powdery mildew, rust and other diseases, because the stem and leaf root system gradually senesce after flowering, and it will be difficult to prevent and control it in the later stage without preventing it in advance, not to mention that this year's wheat generally grows densely, the field is shady, and the poor ventilation and light transmittance will aggravate the occurrence of diseases. In addition, it also has a certain preventive effect on scab. At the same time, it is also necessary to mix with high-concentration potassium dihydrogen phosphate and amino acid water-soluble fertilizer, so as to replenish sufficient energy and lay a good foundation for the bumper harvest and bumper yield of wheat in the later period.
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