Common hazards and control skills in the regreening stage of wheat Case analysis to help you increase yield and income
In March, the wheat began to turn green in most areas, and some wheat fields showed signs of vigorous growth, especially those that grew vigorously before last year's winter, and if the prosperity was not controlled last year, the regreening period will be more serious next year.
For wheat with strong growth, it is necessary to pay attention to controlling the vigor during the growth process, otherwise it is likely that the seedlings will fall during the growth process. In addition, the resistance of the plant itself will also decrease, which will exacerbate the occurrence of pests and diseases.
After the wheat returns to green, seedling control should be carried out from the regreening to the jointing stage for the wheat fields with vigorous growth type or vigorous growth tendency.
On small plots, if possible, two methods, "pressing" and "subsoiling", can be used to control the "vigor" of wheat.
When carrying out suppression, you must be careful, not too much, and use a suppressor to suppress, which only needs to be done once, not repeatedly. If it is pressed too hard, the stalk will be flattened, and when the stalk breaks, the wheat will no longer grow normally.
However, if it is a large area of sowing and there is not enough time for pressing and digging, then it is necessary to spray the "growth suppressant", which is also the first choice of most farmers.
In order to effectively inhibit the growth of the stem, the length of the stem node can be reduced to a certain extent. It should be reminded that the vigor control agent must be sprayed before jointing, because after jointing, it can not be sprayed again, otherwise it will affect future growth and development.
At present, there are several anti-growth agents such as mequatin, paclobutrazole, and parathromine commonly used on the market, and the commonly used ones are mequat and paclobutrazol.
There are several key points to control the application of wang medicine, as long as it is properly controlled, it can play a good role in controlling wang medicine. For example, it is not possible to increase the amount of the control agent, some farmers think that their wheat growth is too vigorous, so they increase the amount of the control agent, which causes the situation of controlling the growth, resulting in the growth of the whole wheat has become short, not only the yield is not improved, but will decline.
In addition, when spraying the growth control agent in the late stage of wheat growth, the timing of spraying can not be too early, nor too late, it is best at 10-17 o'clock, otherwise the spray should be applied in the morning and evening, the temperature is relatively low, and the effect of controlling the wang will be weakened.
Another point, when spraying, don't spray more, don't spray less, some people in the spray, carelessly, spray too much, the result is to control the prosperity, affecting the growth of wheat.
During the vigorous growth period of wheat, the control of moisture and fertilizer should not be neglected. However, the timing of fertilization and irrigation should be avoided during the rejuvenation period.
To carry out fertilizer and water management at the end of jointing, for the growth of wheat, weak seedlings, seedlings yellow, can be advanced to the middle of the jointing, to prevent the phenomenon of early defertilization in the later stage.
Here are two examples:
The first case: In eastern Henan, where the assistant is located, a wheat field has seen vigorous growth, but they did not pay too much attention to it, nor did they suppress it, nor did they spray any fertilizer enhancers. During the wheat abundance period, due to the effects of strong winds and heavy rains, all the wheat that did not control the high season fell to the ground.
The wheat that is too dense and too vigorous has a serious lodging phenomenon, and when it is time to harvest, the machine cannot recover it at all, resulting in a sharp decrease in yield, only more than 300 kilograms per acre.
The second case: We also encountered the same problem on our side, the wheat next door showed vigorous growth, but did not control the growth, but there was no seedling collapse after that. However, they do not pay attention to fertilization, and when they are almost ripe, they will age prematurely because they do not apply fertilizer.
At that time, he was also very happy that the wheat would turn yellow because it matured early, but later, the color of the wheat turned yellow, and the yield not only did not increase, but advanced, and the yield per mu was only more than 500 kilograms.
I think this article has a certain guiding effect on the vast number of farmers, if their wheat is growing vigorously, we should pay attention to control it and strive for high yield.