How to plant corn well?

Now is the season of preparing for ploughing. How should corn seeds be selected? Will there be pests on corn this year? What should I do after the pest occurs? These are all issues that farmers are very concerned about. Researcher Hu Jie, a member of the expert advisory group of China Agricultural Society and a famous corn expert in our province, put forward the following opinions for farmers. In order to prevent possible early frost, maize varieties with moderate maturity, lodging resistance and strong disease resistance should be selected, and it is not suitable for over-planting Hu Jie believes that according to the long-term weather forecast of the Provincial Meteorological Observatory, there will be floods in the east, droughts in the west, staged low temperature in summer and autumn, and early frost in autumn. When selecting varieties, we should choose corn varieties with moderate maturity, lodging resistance and disease resistance, and do not plant them beyond the region. Plant in the right place and at the right maturity. Remember not to take chances and increase production by extending the growth period. Corn is a diversified cash crop, which is not only grain, but also feed and industrial raw materials. Different uses, choose different varieties. Nowadays, the quality requirements of corn production are getting higher and higher, and the national corn purchase has dropped from 18 moisture in the past to 14 moisture last year. If corn wants to earn foreign exchange by export and participate in the international market competition, it must first be in line with the international market in quality. Therefore, we should take the market demand as the breakthrough point, carry out diversified corn production, and produce high-quality, high-yield, efficient and quick-acting corn. This year may be a year of high incidence of diseases and insect pests, especially to prevent head smut of corn. Once the disease occurs, comprehensive prevention and treatment should be given priority to. Hu Jie said that according to the national forecast of this year's pests and diseases, last winter was warmer, and last year's pests and diseases were serious. This year may be a year of major pests and diseases, especially to prevent head smut of corn. If head smut occurs, corn will be devastated. First of all, we should choose varieties resistant to head smut. Choose Fenghe 10 and 108 as the first accumulated temperature zone, 4 Dan 19 and Long 257 as the second accumulated temperature zone, and Long Dan 13 as the third accumulated temperature zone. It is best not to plant corn varieties susceptible to head smut, or to strengthen seed treatment and coating when planting. Secondly, all the sown corn seeds should be treated and coated before sowing, and effective drugs such as triadimefon, triadimefon, and smut net should be used for coating control, which can effectively prevent the spread and occurrence of head smut. Third, do a good job in crop rotation and reduce continuous cropping and continuous cropping. Fourth, in case of head smut, the land should be cut off before the sporophyte breaks and taken to the field for deep burial or burning. We strongly advocate using farmyard manure and returning stubble to the field. When applying chemical fertilizer, it is necessary to stabilize phosphorus, increase nitrogen and supplement potassium, balance fertilization and adopt the method of deep application. Hu Jie pointed out that according to the soil survey in our province, the content of soil organic matter in our province has dropped greatly in recent years, and it is necessary to vigorously advocate the use of farmyard manure and returning stubble to the field. As far as possible, when applying chemical fertilizer, increase potassium fertilizer and adopt the method of deep topdressing. Stabilize phosphorus, increase nitrogen and supplement potassium, adopt balanced fertilization method, reduce cost, improve benefit and realize high yield. When using chemical fertilizer, it is necessary to master the dosage, and it is best to use 12.5 kg diammonium, 5 kg potassium sulfate and 15 kg urea as seed fertilizer per mu. When topdressing, urea must be applied deeply 12.5- 15 kg per mu, and deep root application can really improve the utilization rate of chemical fertilizer.