Corn planting technology: how to manage in the later stage of planting summer corn?

How to manage in the later stage of planting summer corn? Please introduce the management methods for the later stage management of planting summer corn can refer to the following methods: 1. Ensure moisture during the corn filling period: the rainy season in the later period of corn growth has basically passed, if drought directly affects corn filling, we must overcome the paralysis thought of relying on the weather and other rain. Grain filling water is carried out in the middle stage of grain filling, and its main function is to promote grain filling and increase grain weight. 2. Supplementary application of nitrogen fertilizer: grain fertilizer is generally applied from heading to silking stage, mainly nitrogen fertilizer, about 10 kg urea per mu, which can promote grain filling, increase seed setting rate and grain weight. 3. Removal of weeds and weak plants in corn fields: with the popularization of mechanized harvesting of wheat, the shielding of wheat straw and stubble reduced the control effect of herbicides, and the weeds left over in wheat fields (Weibo) also increased the difficulty of weeding. The weeding effect of chemical weeding is not good, and it is necessary to pay close attention to ploughing and weeding in the fields where there are many weeds. Combined with weeding and removing diseased plants, small plants, weak plants, miscellaneous plants and tillers, it is necessary to remove plants properly if the density of remaining seedlings is too high, so as to maintain a reasonable and good population structure in the field. In the corn field, there are always a certain number of plants forming empty stalks or low plants with sterile ears, which not only consume nutrients in vain, but also affect the photosynthesis of other plants. For such plants, be sure to pull them out, so as to concentrate the limited nutrients to normal plants. 4. cultivate the soil of corn in time to prevent lodging: because it is windy in autumn, it often causes lodging of corn. Therefore, it is necessary to cultivate the soil in time after topdressing corn to prevent lodging. If the lodging phenomenon occurs in the growing period of corn, it will seriously affect the formation of yield, which can lead to no harvest. Soil cultivation can increase the formation of aerial roots and enhance the lodging resistance of maize. 5. Timely control of corn diseases and insect pests: the principle of "prevention first and comprehensive control" should be adopted in the prevention and control of summer corn diseases and insect pests. The main disease in the later growth stage of summer corn is brown spot, and the pests are corn borer, red spider and aphid. Brown spot can be sprayed with 3000 times of 20% trimethoprim, 50% carbendazim or 1000 times of methyl topiramate before or at the initial stage of the disease, once in 7-10 days and 2-3 times in a row. For the control of corn borer, when the plant rate reaches 10%, phoxim or 1605 kg of water is added to 10 kg, and 25 kg of furnace ash is mixed into granules, which are put into the mouth of the corn trumpet. Red spiders and aphids can be sprayed with 1500 times of imidacloprid. 6. Corn should be harvested late at the right time, which can ensure sufficient filling time for corn, which is an effective measure to increase grain weight and increase yield and income. The harvest of corn should be postponed to the end of September and the beginning of October. The standard of corn ripening is that the ear bracts turn white, dry and loose, the milk line disappears, the grain is shiny, and the grain weight is the highest. Click to get more corn planting techniques click to get more food crop planting techniques