May:

The preparation of agricultural materials such as corn seed and base fertilizer is mainly done. Among them, corn seed preparation is the focus.

When farmers purchase corn, they should use high-yield, disease-resistant, lodging-resistant, and dense-proof national or provincial varieties, such as Zhengdan 958, Yandan 20, Yandan 22, Zhongke 11, Daiyu 35, etc. Prepare 2 to 3 kg.

The base fertilizer should use high-phosphorus, potassium-rich compound fertilizer at the same time rich in trace elements, 15-20 kg per mu, do not advocate urea as base fertilizer.

June:

1, when the rush to fine sowing. After the wheat harvest, it is necessary to grab the time for early sowing so as to receive a piece of planting seed. The sowing date must not be later than June 15. Use air-supply seeding machines as much as possible during sowing to ensure that the density is reasonable.

2, early seedlings, early set seedlings. Advocate 4 leaf one-time one-time Dingmiao, when the seedlings go weak to stay strong, there is a lack of seedlings, do not advocate fill seedlings, leave two plants in the absence of seedlings.

3, chemical weeding. Before using seedlings, the use of acetamidine and jasmine bismuth, and post-emergence use of herbicides such as nicotinide, sargasin, etc., in order to enhance the weeding effect, it is necessary to pay attention to multiple sprays under the premise of ensuring the dosage of mu.

4, control of seedling pests and diseases. Mainly to prevent corn borer and other pests.

July:

Entering into July, the growth of summer maize will enter or have already entered the jointing period, marking the end of the corn seedling stage and entering the stage of vigorous growth. It is the top priority of field management in the corn life.

1, top dressing. Two top dressings are to be conducted this month, namely jointing fertilizer and panicle fertilizer.

Jointing fertilizer: The period is dominated by 6 to 7 pieces of corn, and the leaf index is about 30%. The time is roughly 25 days after the sowing of corn. According to the situation, the amount of topdressing fertilizer can be flexibly grasped; if basic fertilizer (composite fertilizer containing N, P, K, and trace fertilizers) has been applied at the time of sowing, only nitrogen fertilizer (such as urea) can be topdressed in this topdressing, and topdressing fertilizer accounts for 30 parts of the total N fertilizer. %? 40%; if the shovel is sowed without applying the base fertilizer, all phosphate fertilizer, potash fertilizer, trace fertilizer and about 30% nitrogen fertilizer should be applied.

Fertility panicle fertilizer: The period is controlled by 12 to 13 pieces of corn, and the leaf index is about 65%. The time is generally about 45 days after sowing. Only topdressing nitrogen fertilizer was applied to topdressing, and the amount of topdressing fertilizer accounted for 60 to 70% of the total nitrogen fertilizer.

As the demonstration farmer's corn production is generally higher and the soil fertility is better, the total fertilizer amount is calculated as the yield per hectare of 600 kg or more: pure nitrogen 15-18 kilograms (32.5 to 39 kilograms of urea); pure phosphorus 9-11 kilograms (off Superphosphate 75 to 90 kg); pure potassium 5 to 8 kg (dissolved potassium sulfate 10 to 15 kg); zinc fertilizer 1 to 2 kg.

2, watering: pay attention to pouring water and booting water.

3, pest control: The main prevention and control of corn borer and spore leaf spot disease.

August:

Maize growth this month will enter or have entered the flowering period, the focus of management is to raise roots and protect the leaves, and promote grain filling.

1, chase attack grain fertilizer. The time is controlled by the ear silking stage. During this period, topdressing is only for plots with de-fertilizers. Generally, 5.8 kg of urea is recovered per mu, and there are no signs of detoxification.

2, watering. The weather is dry and attention should be paid to watering and attacking grains, especially the flowering period of tassels.

3, prevention and control of the ear corn borer, tassel.

4, artificial emasculation shearing and auxiliary pollination.

September:

Maize will gradually enter maturity. Since most of the corn types used in our county are fake, in the past, people saw the yellow leaves be harvested and the yield of corn was reduced by about 50% to 10%. Therefore, it is recommended that the model households postpone the harvest period and harvest them when they are ripe. The signs of perfection are: the yellow leaves are completely yellow, and the hand feels loose. The grain milk line disappears and black spots appear.

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