In what month can northern corn be planted? What is the average yield per mu?

Corn in the north is usually planted in spring and autumn, and the climate in spring is drought first and then water

In what month can northern corn be planted? What is the average yield per mu?

Corn in the north is usually planted in spring and autumn, and the climate in spring is drought first and then waterlogging, so the earliest sowing time is mostly from late April to early May, and it can be harvested in August, while the autumn sowing time can not exceed mid-July at the latest, and it can be harvested in the middle and late June of 10. Corn should be planted in deep and soft soil. In order to improve soil fertility, it is necessary to apply sufficient fertilizer before planting.

1. In what month can northern corn be planted?

1. Corn is mainly planted in spring and autumn in the north. The climate in spring is generally drought first and then waterlogging, so the earliest sowing time can generally be selected from late April to early May, so that the harvest can be achieved in August. Sowing time in autumn should not exceed the middle of July at the latest, so that the harvest can be carried out in the middle and late period of 10.

2. Corn must be planted in a place with deep soil and soft soil. In order to improve soil fertility, sufficient fertilizer can be applied before planting. Usually, 2000 kilograms of decomposed organic fertilizer should be applied per mu, and 7.5 kilograms of phosphorus pentoxide and 5.5 kilograms of potassium fertilizer should be supplemented.

Before planting corn, the seeds should be treated first. Seeds can be soaked in clear water to make them fully absorb water and promote germination. At the same time, it should be soaked in potassium dihydrogen phosphate and other drugs for a period of time. When soaking, control the concentration and time. Too high concentration or too long soaking time will lead to seed poisoning and reduce germination rate. Seed dressing with pesticides after soaking can prevent various diseases and insect pests at seedling stage.

4. When planting, you can sow corn seeds evenly in the soil, and the sowing depth must be consistent, so that the seedlings will be neat. Before sowing, water should be poured enough, and after sowing, water is not needed to avoid the seeds going with the water. Before emergence, the demand of seeds for water is low, and the soil moisture should not be too high, so as to avoid the root system taking root too deeply and leading to lodging in the later stage.

2. What is the average yield per mu of corn in the north?

1. The yield of corn will be different in different regions and at different times. Conventional corn is generally grown in Liaoning, Jilin and Heilongjiang provinces. In general, the yield per mu is about 1000- 1400 kg. Summer maize is planted in Huang-Huai-Hai area, and the yield per mu is generally around 1200 kg. The planting yield in Xinjiang can generally be as high as 1400- 1800 kg.

2. If you want to increase the yield of corn, you must choose varieties with high yield, strong disease resistance and stress resistance, which can adapt to the local environment, such as Denghai series and Xianyu series. After buying seeds, you should screen them first, remove empty grains and shriveled grains, and be sure to choose full and round corn grains for sowing. After selection, the seeds can be coated with seed coating agent. Is it thiram? Carbofuran suspension can be used.

3. Pay attention to fertilization, which can be based on base fertilizer and supplemented by topdressing; Nitrogen fertilizer is dominant, supplemented by phosphorus fertilizer; Fertilization is based on the principle of panicle fertilizer and granular fertilizer. After deep ploughing and ploughing, base fertilizer must be applied, and the base fertilizer is mainly decomposed organic fertilizer. When topdressing, nitrogen fertilizer 1.5 kg, phosphorus fertilizer 4 kg, potassium fertilizer 5 kg and zinc sulfate 1.5 kg can be applied per mu. Before the jointing stage of corn, the topdressing of phosphorus, potassium, sulfur, zinc and nitrogen fertilizer can be applied to 15-20cm, and 50% of the total nitrogen fertilizer can be topdressing at the big horn stage of corn.