Wheat top dressing
At present, wheat is in the overwintering period, and many friends are already worried about the management of wheat after the beginning of spring. That is, when is it good to top dressing next spring?Which fertilizer is better to use?I believe this is also the issue that everyone is most concerned about, so let's take a look.
Wheat topdressing should be considered according to seedling conditions, soil fertility and weather and other factors, after the wheat topdressing is divided into the following situations for reference:
The first is a strong seedling field. If the overall wheat leaves are straight, the plant is robust. At this time, you can choose to top dressing after wheat jointing. Premature topdressing is easy to cause plant growth and increase the hidden danger of lodging in the later stage. This kind of wheat field has sufficient bottom fertilizer, but lacks a large number of elements of nitrogen, phosphorus and potassium, and can choose compound fertilizer to promote large ears and more grains, about 20 catties per mu;After the wheat is flowered, foliar fertilizer is sprayed to promote grain weight, and there is generally no need for top dressing.
The second is the wheat field of Wang Miao. Wang seedlings should be postponed fertilization time, in the second internode of wheat fixed and then top dressing, the use of phosphorus and potassium compound fertilizer, per 20 catties or so, the main number of grains and grain weight.
The third is the weak seedling field. This type of wheat can be seen with small, thin leaves and yellowish leaf color. At this time, the top dressing should be highlighted early, and the fast-acting fertilizer is the mainstay, and high-nitrogen compound fertilizer or urea can be used, which can make the plant grow quicklyBefore the top dressing is selected to return to greening, after the soil is thawed, 30 kg of urea or 40 50 kg of compound fertilizer is applied per mu.
Have you learned?