Wheat fertilization technology, how to apply fertilizer to ensure high yield

Wheat fertilization technology how to fertilize and maintain high yield? For wheat planting, want to maintain high yield, fertilization is very important, there is a saying that is called a crop of flowers, relying on fertilizer to take the home, so wheat planting fertilization is the top priority of high yield. We start with the common nitrogen, phosphorus and potassium. Generally speaking, during the growth of wheat, NPK is the three elements of wheat nutrition. In the middle and upper fertile soil, every kilogram of wheat grain needs to absorb 3.0 kg from the soil. Nitrogen, 1.2 kg of phosphorus pentoxide, 3.0 kg of potassium oxide, according to this renewal law, we scientifically fertilize.

Generally speaking, the growth cycle of wheat is 125-135 days, which is relatively long. At this stage, attention should be paid to the law of wheat fertilizer requirement. According to different time periods, the corresponding large amount or trace elements should be supplemented in time to ensure the growth of wheat. The fertilizer needed. Before the sowing, the winter wheat area is planted with organic fertilizer and chemical fertilizer, then ploughed into the soil, and fertilized according to the local soil and climatic conditions combined with the soil analysis of the local plant protection station. According to the local soil conditions, the combination of chemical fertilizer and organic fertilizer is used. Can maximize wheat yield.

At present, most of my domestic wheat is in the northern region. However, due to the relatively small amount of precipitation in the northern region, deep application should be used when fertilizing, that is, organic fertilizer and chemical fertilizer should be applied in one go before the planting of wheat. Generally speaking, precipitation There is no need for topdressing in areas with few areas. The principle of fertilization of wheat is to apply enough base fertilizer and increase the application of organic fertilizer. Due to the shortage of soil organic matter in many areas in China, the application of organic fertilizer can improve soil quality and have certain yield and quality. s help.

Wheat should pay attention to the application of fertilizer during the planting process, but it depends on the growth of wheat. If the wheat is less tiller, the seedlings are not good, and the fertilizer can be applied early. If the seedlings are good, the tillering situation is good, and it can be appropriate. Shi, wheat, seedlings, fertilizer, wheat, tiller, wheat seedlings, good seedlings, strong growth, should be appropriate late, wheat tillers less, seedlings are not good, the situation is weak, should be appropriate early. Due to the hot weather in the northern part of the country in May each year, in order to prevent the dry hot wind hazard, 0.2% potassium dihydrogen phosphate foliar fertilizer can be sprayed 1-2 times, the effect is better.

Fertilization of wheat also needs to pay attention to buying two key fertilizer requirements, namely the critical period of wheat nutrition and the maximum efficiency period of nutrition. It is essential to have a flexible grasp of these two periods. The critical period of nutrition refers to the period of wheat seedlings, because the root system is still very weak. The absorption capacity is poor, so phosphorus is very urgent in the seedling stage. The critical period of nitrogen nutrition is when vegetative growth turns to reproductive growth, and winter wheat is in the two stages of tillering and young panicle differentiation. The application of nitrogen fertilizer in the late growth stage can only increase the nitrogen content in the stems and leaves, which has no obvious effect on increasing the number of grains per ear or increasing the yield.

Let us talk about the maximum efficiency period of wheat nutrition. The so-called wheat nutrition maximum efficiency period refers to the period in which the maximum amount of nutrients absorbed by wheat is the highest, the absorption rate is the fastest, and the efficiency of fertilization is also the highest. The maximum efficiency of winter wheat nutrition is from jointing to heading. At this time, the growth is strong and the ability to absorb nutrients is strong. It is necessary to timely topdress to meet the maximum demand for nutrients in wheat and to obtain the best fertilization effect. Finally, it is concluded that most of the nutrients absorbed by wheat come from the fertilizers applied in the season. It is necessary to make scientific and rational fertilization to increase and increase the yield of wheat.

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Tunnel Indicator Traffic Light

Tunnel indicating traffic lights
1. The red cross and green arrows are outdoor traffic lights:
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With the economic development of various provinces and cities, the construction of highways connecting various regions has been gradually improved, and there are more and more long tunnels and extra-long tunnels. Road tunnels are enclosed spaces with limited traffic space and difficult air circulation. They rely solely on the original reflective traffic. Signs in the tunnel will quickly lose the reflective effect due to air, oil, dust and other impurities. In order to better indicate the traffic safety in the tunnel and overcome the impact of air pollution by the single-reflective film, the active light-emitting form is adopted, so There is an electro-optical sign.

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