The latest topdressing methods and matters needing attention for wheat in spring

After winter, the temperature rises gradually in spring, and the wheat begins to enter the green period, which is the key period for spring management of wheat. For the management of wheat at the re-greening stage and jointing stage, it is extremely important for the subsequent ear formation, and fertilization in spring management is the most important, so how should wheat be topdressed in spring? Let's take a look.

1. According to the growth of wheat seedlings

After experiencing a winter, there are some differences in the growth of wheat seedlings in different regions and different plots. If the color of wheat seedlings is tender green and there is no off-target phenomenon, under normal circumstances, less nitrogen fertilizer can be applied, or topdressing can be carried out later, generally 8-10 kg per mu can be applied. If the wheat seedlings grow poorly, the plant tillers are few, and yellow occurs at night due to freezing damage, more nitrogen fertilizer can be applied appropriately, urea 15-20 kg per mu can be applied, and calcium superphosphate and potassium chloride can be matched with 5 kg each. On the one hand, it stimulates the wheat to return to green, and on the other hand, it improves the ear rate of tillers.

2. Based on soil fertility

Different plots, soil fertility will also be different, this can be seen from the wheat growth, if the soil fertility is relatively good plots, wheat before sowing sufficient base fertilizer, plus the application of organic fertilizer, or soil testing formula fertilization, wheat growth is good, safe also read, spring can be less nitrogen fertilizer, generally 8-10 kg per mu can be applied. If the soil fertility is relatively poor, the base fertilizer application is insufficient, the wheat growth is poor, and the seedlings are weak and yellow, such plots should be fertilized more, 20 kg urea, 8-10 kg calcium superphosphate and potassium chloride should be applied per mu, so as to meet the nutrient requirements of wheat subsequent growth.

3. Precautions

It is recommended to choose a sunny day for topdressing, and the time can be selected around noon. However, some farmers will choose to topdress before rain, watch the weather forecast, and spread urea in the wheat field before rain. This will reduce the fertilizer utilization rate a lot, so special attention should be paid. If there are irrigation conditions in the wheat field, after topdressing, can be appropriate watering, on the one hand in order to supplement water, on the other hand is not conducive to fertilizer absorption, do not flood irrigation for a long time, water can be appropriate. For wheat fields without irrigation conditions, it is not recommended to apply fertilizer when topdressing. Deep application method can be adopted. The depth is generally about 5-6 cm. Remember to cover the soil in time after fertilization to improve the utilization rate of fertilizer. Topdressing should not be excessive, otherwise it will have the opposite effect. On the one hand, it will cause fertilizer damage, and there will be an increase in cost, and it will not increase production.

The above is the introduction of wheat spring topdressing methods and precautions, I hope to help you, want to know more about the relevant knowledge, please pay attention to us.