Time and method of maize fertilization

Topdressing time of maize was carried out when the maize grew to 6-8 leaves and the seedling height was 30cm, which greatly promoted the growth and yield of maize. In addition, topdressing should not be too late, and it is not suitable for topdressing when it doesn't rain.

Fertilization method:

1, topdressing at seedling stage

Corn needs a lot of fertilizer at seedling stage, so topdressing should be light. During this period, quick-acting nitrogen fertilizer should be mainly applied, and phosphorus, potassium fertilizer and decomposed farmyard manure should be added appropriately. When there are 3-4 leaves of corn, top dressing can be carried out in holes, with 500 kg of decomposed farmyard manure +2-3 kg of urea per mu, and the amount of top dressing is determined according to the growth of corn. If it grows vigorously, topdressing is unnecessary.

2. Topdressing at jointing stage

This topdressing is to enhance and prolong the photosynthesis of leaves and promote the strong stalks and ears of corn. Topdressing is mainly available nitrogen fertilizer, and it is applied at the point when the maize leaves are 7-9. For the plots with insufficient phosphorus and potassium fertilizer, an appropriate amount of ternary compound fertilizer is needed, and the effect is better with the application of decomposed farmyard manure.

Step 3: Top dressing your ears

Topdressing is carried out at the big bell mouth stage, mainly to promote the differentiation of spikelets and florets, make the ear bigger, increase the number of grains and increase the upper leaves. Available nitrogen fertilizer should be given priority to, and appropriate amount of phosphorus and potassium fertilizer should be applied. Topdressing15-17kg for high fertility plots,18-20kg for general plots, and 22-25kg for plots with insufficient base fertilizer.

Corn planting method:

1, soil preparation and fertilization

Before planting corn, soil preparation and fertilization are needed. First of all, humus soil with rich trace elements and good drainage should be selected as subsoil, and it should be deeply turned and aired to eliminate bacteria and pests in the soil, or base fertilizer should be mixed in the soil to improve the fertilizer content of the soil.

2, seedling treatment

To plant corn, we should raise seedlings. First, you need to mix humus with clear water to make a batch of palm-sized soil balls, then press a small hole in the center of the soil balls with your fingers, put in corn seeds and cover with fine soil. In the process of seedling raising, you can also build a greenhouse for corn to help seeds germinate and grow.

3. Transplanting and planting

After corn seeds germinate smoothly, it is necessary to observe the growth of seedlings regularly. After the corn seedlings grow to 10 cm, the weak seedlings can be pulled out, and then the other seedlings can be dug up and transplanted into the prepared foundation soil, and the plant spacing should be controlled at 25 cm.

4, post-management

After transplanting, unpolluted natural water and river water can be irrigated for corn to keep the soil moist, and nitrogen fertilizer can be provided for corn, supplemented by phosphorus and potassium fertilizer, so as to improve the growth speed of the plant, and all-day sunshine can be provided for corn to make the plant grow more vigorously.