Field disaster prevention recommendations for corn in the mid-to-late growth stage

During the transition from summer to autumn, severe convective weather with fierce winds and rainstorms often occurs, frequently causing lodging or stalk breakage disasters in corn and other crops. The following recommendations for disaster prevention are hereby proposed:

First, strengthen field management before the disaster arrives. During the large trumpet stage of corn, carry out timely intertillage, hilling and fertilization to promote root growth and ensure that the aerial roots grip the soil firmly. Also pay attention to listening to weather forecasts and take measures in advance to reinforce plants against lodging.

Second, after a rainstorm disaster, corn that has lodged or had stalk breakage before maturity should be promptly lifted upright to prevent plants from pressing down on each other and affecting photosynthesis. For corn with broken stalks, if it is only leaning over, simply set the plant upright. If the stalk is broken, tie the plant together with a bamboo pole using rope so that the plants support each other.

Third, corn is a crop with a high water requirement that is not tolerant of waterlogging. In the late growth stage of corn, under high temperature and rainy conditions, the rhizosphere often suffocates and necroses due to lack of oxygen, causing a rapid decline in vitality and the plants to wither before maturity, which greatly affects yield. For corn affected by waterlogging, drain the field water as early as possible to reduce soil and air humidity and promote plant recovery.

Fourth, strengthen field management after the disaster, carry out timely intertillage and hilling to break up soil crusting, improve soil permeability, and enable the plant roots to resume normal physiological activity as quickly as possible. At the same time, apply additional quick-acting nitrogen fertilizer, broadcasting 15-20 kg of ammonium bicarbonate per mu, and spray 60-80 kg of 0.2% potassium dihydrogen phosphate solution on the leaves to accelerate plant growth and reduce losses from waterlogging.

Fifth, the hot and humid season is also a season with a high incidence of corn diseases and insect pests. Pay attention to the alternating occurrence of corn rust, northern and southern leaf blight, ear rot, and aphids and other pests and diseases. Prevention and control should preferably be carried out in the morning or evening on clear days without rain.