Summary of Corn Planting Process and Planting Technology

1. The sowing date of maize is affected by temperature and humidity. The best sowing date of spring sowing corn is 7.6cm, and the upper layer is 65438 05℃. The summer sowing corn in North China should be sown in time after wheat or peas are harvested. Sowing depth is 2.5- 10 cm according to soil moisture, and 5-6cm is the most suitable. Sowing amount per mu is 3-4 kg, and 4000-6000 plants per mu. Planting method of forage corn. Unicast, convenient mechanized operation from planting to harvesting.

2. Intercropping with soybeans, socks, peas and vetch seeds can increase the yield of protein per unit area. Management: Corn plants are tall, with high yield of seeds and stems and leaves, which need careful management. Fertilization, irrigation, chemical weeding and pest control are the key technical measures for high-yield cultivation and management of maize. In order to obtain high-yield and high-quality corn, 2000-3000 kg of high-quality organic fertilizer should be applied as base fertilizer per mu before sowing. When sowing, 4-5 kg of sulfuric acid, 0/5-20 kg of calcium superphosphate/kloc/mu and 2-3 kg of chlorinated trees are used as seed fertilizer, and nitrogen fertilizer is applied at jointing stage, booting stage, heading stage and flowering and filling stage.

3. The nitrogen application rate in the whole growth period is 10-20kg/ mu. N: p: k is 1: 0.5-0.8: 0.8. Corn likes semi-arid climate, but it is very sensitive to water. The water consumption of maize plants is about 2 kg per day at flowering stage, 3-4 cubic meters per mu per day, and the whole growth period is 250-350 cubic meters. Different corn needs different moisture. The period from 10 day before heading to 10 day after heading is the biggest and most sensitive period of maize's life, which is called "critical period of water demand". Irrigation should be carried out during this period.

Generally, corn should be watered 3-4 times in a lifetime, depending on different regions and specific conditions. At present, most irrigation methods in China are furrow irrigation and border irrigation. Recently, sprinkler irrigation and drip irrigation have been developed, which not only saves water, but also irrigates evenly. Corn is not tolerant to waterlogging. In areas with high groundwater level and heavy rainfall in the south, attention should be paid to drainage or ridge farming and field combination to prevent waterlogging.

5. Corn often suffers from diseases such as leaf spot, head smut, smut, black-streaked dwarf disease and bacterial wilt, as well as pests such as armyworm, corn borer, grubs, cutworms and grubs. Measures such as selecting disease-resistant varieties, strengthening cultivation management, rational crop rotation and chemical control should be taken to prevent and control pests and diseases in time.