How to prevent high-temperature damage in corn? Latest methods shared
Corn is a relatively important food crop in China, and it also has a very large planting area in China. When planting corn, we need to adjust management appropriately as the seasons change. Especially in summer, if management is improper, corn is very prone to high-temperature damage, which can have a serious impact on both the quality and yield of corn. So how should we prevent high-temperature damage in corn? Let's take a look together below!
1. Artificial pollination
After entering summer, because of high temperatures, the pollen shedding, pollination, and fertilization and seed-setting ability of corn will all decline as a result. Therefore, during the pollen shedding and flowering stage of corn, if the weather exceeds 35 degrees, then we must pay attention to doing a good job of supplementary artificial pollination, avoiding the effects of high temperature, reducing the pollination and fertilization ability of corn, and improving the seed-setting rate of corn. When artificially pollinating, we should usually collect pollen at around 9 a.m. Then do the pollination work well, mainly collecting and pollinating as we go, which can effectively increase corn yield.
2. Reduce planting density
⟦NL>When planting corn in summer, be sure to control planting density well. Generally, wide-narrow row planting is mainly used, because under low planting density, competition for nutrients and water among individual corn plants can be effectively reduced. This can enhance the high-temperature tolerance of corn plants and reduce the occurrence of high-temperature damage. If planting at high density, then pay attention to using wide-narrow row planting to improve field ventilation and light penetration and lower the field temperature. Aim to grow robust plants, strengthen the growth ability of corn plants, and ensure yield and quality.3. Rational fertilization
Fertilization work in summer is also very important. We should appropriately increase the amount of farmyard manure, focusing on base fertilizer, to promote early development of the plants. Then we should also pay attention to the use of trace elements. After corn seedlings emerge, apply seedling fertilizer appropriately and early to promote strong stalks. During the large trumpet stage of corn, the topdressing should be mainly ear fertilizer. Then it should be carried out in combination with irrigation to improve the nutritional status of the plants. Finally, in summer, foliar fertilizer should also be applied appropriately, which can not only reduce temperature and humidity, but also meet the nutrients needed for corn growth.
4. Water at the right time
Under the high-temperature environment of summer, conditions are generally accompanied by drought. Therefore, after entering summer, pay attention to appropriate watering, which is the simplest way to cool down. And after watering, corn can also absorb water and enhance transpiration, which can effectively lower the canopy temperature. This reduces high-temperature damage as well as respiration consumption caused by high temperature. However, watering should not be excessive. It should mainly be light watering, and you must not water too much, otherwise waterlogging damage is likely to occur. It is best to mainly use sprinkler irrigation, directly sprinkling water on the leaves, which can effectively achieve a cooling effect.
The above is a brief introduction to how to prevent high-temperature damage in corn. The high-temperature damage of corn has a very large impact on its yield and quality, so everyone must pay close attention. That is all for today's introduction. This article is for reference only, and I hope it can help everyone!