Before the Lantern Festival, wheat weeding, what things need to be paid attention to when fertilizing?
Wheat field chemical weeding is the most important link in the wheat planting process, but many farmers are prone to many problems, especially the improper use of herbicides will lead to poor weeding effect or serious pesticide damage to wheat Soil fertilization status: that is to say, if it is a sandy soil with poor fertilizer retention capacity or a soil with less organic matter content, more organic fertilizer should be applied in the base fertilizer to increase fertilizer retention capacity and fertilizer supply, and the amount of fertilizer should be less and more.
Wheat fertilizer demand: Since wheat grows differently in each period, the fertilizer demand will also be different. For example, the plant growth amount before the winter wheat turns green is small, and the amount of nitrogen, phosphorus and potassium fertilizer is small, so the amount of fertilizer should be relatively reduced. In addition, after the winter wheat enters the rejuvenation period, the rejuvenation festival should be reapplied, and the weak seedlings with poor fertility and late sowing should be applied as soon as possible.
If it is spring wheat, tillering fertilizer and appropriate amount of topdressing should be re-applied, and if the tillering fertilizer has not been applied before, tillering fertilizer should be re-applied to meet the fertilizer needs of the high pre-growth stage of the next growth stage. The average daily temperature, do not use herbicides when below 5 degrees, the general herbicide is not good at low temperatures, easy to appear pesticide hazards, at the same time, wheat at low temperatures its resistance declines, its detoxification speed is relatively slow, easy to appear pesticide hazards! If the soil is too dry and there is water, do not use herbicides. If the soil is too dry, the ability of the weed to absorb the liquid is reduced, resulting in poor results.
If the soil moisture in the field is too large, the ability of wheat roots to absorb nutrients decreases, the resistance is reduced, and pesticide damage is prone to occur. Generally, the application of dry land does not stick to the feet, and the water and drought rotation is the most suitable for the field without sinking the feet! "。 Yellow seedlings, weak seedlings do not use herbicides; wheat yellow seedlings, weak seedlings themselves have poor resistance, if chemical weeding is taken at this time, it will aggravate the wheat yellow seedlings, serious will lead to dead seedlings must first promote the weak to strong, in order to carry out chemical weeding Wheat seedling stage Serious disease, do not use herbicides, if the wheat is not seed coating after sowing.
