What should be paid attention to when applying fertilizer in early spring

Spring is a busy season for farming, and the growth and development of crops is inseparable from fertilizers, so it is the season for farmers to apply fertilizer after the beginning of spring, and many crops are spread with compound fertilizer and urea, which is actually incorrect. So what should we pay attention to fertilizing in early spring? Let's get to know it with the editor.

1. Applying nitrogen fertilizer in the early stage

Most of the early spring crops are in the budding and flowering stage, when the consumption of nutrients is extremely large, and nitrogen fertilizer is the main component of protein in crops. In the flowering period, the nutrient consumption of crops reaches about 70% of the stored nutrients, and a large amount of nutrients are needed for the development of long branches, fruit setting and young fruits after flowering, so there will be a lack of plant nutrients. Therefore, fertilizer must be applied once before flowering and germination, mainly nitrogen fertilizer.

2. Timely fertilization should be achieved.

Nitrogen fertilizer is used in the critical period of nitrogen demand and high efficiency period of crops, and different crops need different critical periods and higher efficiency periods, so they should be treated differently and applied reasonably. For example, for gramineous crops such as wheat and corn, the critical point of nitrogen requirement is at the tillering stage and booting stage, while the nitrogen efficiency period is from jointing to booting stage for wheat, from tillering to jointing stage for rice, from big trumpet stage for corn, and for tomato at fruiting stage, so fertilization requires timely fertilization and differential treatment.

3. Water-soluble fertilizer should be applied in early spring.

The root system of early spring crops is in the growth stage, if the root system grows rapidly and the root system is developed, sufficient nutrients are needed in early spring, but the fertilizer effect period of topdressing in spring should not be too long, otherwise it will mainly cause crops and affect the growth in the later stage. Generally, the effect period of topdressing should not exceed 20 days. However, the fertilizer effect period of general compound fertilizer will be longer than this, and water-soluble fertilizer is more beneficial to the absorption of crops, and the effective period is also faster.

4. Pay attention to urea application in early spring

Urea will decompose into phthalamine nitrogen in the soil, which can not be directly absorbed by crops, but must be transformed into ammonium nitrogen by microorganisms in the soil before it can be used. The speed of this transformation time is closely related to the air temperature. when the temperature is about 10 degrees, the conversion time takes 7-10 days, while that of 20 degrees takes 4-5 days, while the temperature in early spring is generally lower, and the conversion time may be longer. it is possible to fail to keep up with the critical point of crop fertilizer and greater efficiency period, which will not only cause waste, but also cause lodging, flourishing and fruit setting in the later stage.

The above is the introduction of what should be paid attention to in early spring fertilization. I hope it can help you. If you want to know more about it, please follow us.