The application of panicle spike fertilizer is the most important top dressing in the growth of corn. During the corn big bell stage application, individual earlier plants can feel “smallpoxâ€. The time of application of panicle fertilizer can also be determined according to the number of days after sowing. Generally, spring sowing maize in open field is 60-65 days after sowing (late-maturing varieties), 58-60 days (mid-maturing varieties), and 50 days (premature varieties). Pan ear fertilizer. The panicle fertilizer is mainly available nitrogen fertilizer, and the application amount is 50-60% of the total nitrogen. Generally 10-15 kilograms of urea per acre are applied in the base fertilizer and seedling fertilizer without application of phosphorus and potassium fertilizer. At this time, 10 kg of phosphorus and potassium fertilizer can be supplemented. Pan-fertilizer can be applied between two rows of corn, and can also be applied in a hole, immediately after the application, to prevent the fertilizer from volatilizing and losing. Insufficient growth or uneven growth of the early stage of the field should be applied early, and the vigorously growing field should be delayed. Cultivating soil in combination with panicle-fertilizing soil for clearing the soil and cultivating the soil in the ditch in the base of the corn will help improve the lodging resistance of the corn, and it is also conducive to drought resistance and stain-resistance. In earth-cultivation, it should be noted that the clay loam soil should not be used after the rain. After the rain, soil cultivation will cause soil compaction and gas shutoff. The soil air will be insufficient. In the dry land without irrigation conditions, it is not suitable to cultivate soil, otherwise it will affect the growth of corn due to drought, especially in the later period, causing excessive evaporation of soil moisture. b. In addition to high-abundance panicles with high fertility and low density, a multiple-spike phenomenon is more likely to occur, especially in fresh waxy corn and sweet corn. Except for a few plants that grow particularly well, one can leave two spikes, but generally one. One ear can be left in the plant to reduce nutrient consumption and increase the commodity rate of the ear of corn. However, it should be noted that when eliminating unnecessary ear of corn, it is not possible to damage and remove the ear leaf, otherwise it will not be worth the candle. Individual fresh sweet corn varieties, but also remove excess tillers to prevent nutrient consumption. The prevention and treatment of pests and diseases at the end of the heart and leaves is a suitable period for preventing and controlling corn borer. When the planting rate of the flower leaf reaches more than 25%, it should be controlled. It is better to use the agent for irrigation or use granules to apply to the bell mouth. It is also possible to use BT powder 800-1000. Double spray control. In the early stage of disease, corn spot can be controlled by spraying with 64% antivirus WP 1000 times solution or 80% San Desheng WP 600-800 times solution, spraying once every 7-10 days, and spraying 1 -2 times. Harvesting of fresh corn at the right time can be harvested 22-25 days after pollination. Sweet corn harvest time and preservation time is short, and it requires sales, food, and processing on the day of picking the same day, and the quality of the long-term storage period will decline. Common hybrid corn harvested in dry seeds is generally harvested 40 days after pollination. Seafood Mix,Cooked Mussel Meat,Mussel Half Shell,Cut Swimming Crab GOLD STAR FISHERY ZHOUSHAN CO.,LTD. , https://www.goldstar-aquatic.com
Field Management Points in Late Spring Corn