Rescue measures after Typhoon Dujuan blew down Corn and Corn lodging

These two days, typhoon "azalea" is carrying strong winds and heavy rain to visit coastal areas such as Fujian, some crops, especially such slender crops as sugar cane and corn, are really suffering under the ravages of strong winds and heavy rains, and are easily blown to the ground. After corn sticks to the ground, it is easy to rot in water for a long time. So how to rescue the lodging corn?

corn lodging

1. Artificial straightening: corn with light lodging does not need to be straightened. Corn plants have strong self-regulation ability, and will naturally stand up with growth; if lodging is serious, artificial straightening method shall be adopted when the soil is slightly dry after rain; for lodging before big bell mouth stage, artificial straightening method shall be adopted immediately after lodging of corn, the first and second nodes of corn stem base are relatively weak, and part of root system is damaged. When straightening, it is better to prevent breaking and increasing root injury, and it is better to operate by two people, one of whom grasps the upper part of corn and pulls up, and the other cultivates soil at the root of corn; For the plots with broken corn stems, the broken corn plants should be removed from the field as soon as possible to avoid decay and affect the normal growth of corn.

2. Soil cultivation and fixation: If lodging is corn before and after male pollination, artificial straightening should be carried out as soon as possible after rain and soil cultivation should be carried out to fix corn. At this time, the plants are tall, and after falling, the plants overlap each other, and it is difficult to restore to the upright position, which not only affects pollination, but also affects photosynthesis. It must be manually lifted up. When lifting up, it should be early, slow and light to avoid damaging the roots. Several corn plants can also be bundled into triangles or quadrangles for normal pollination and grouting. Manual lifting can be combined with soil cultivation.

3. Water and fertilizer management: After lodging, the photosynthesis is poor, which interferes with the physiological function and affects the filling and fruiting. Corn fields that have been fertilized only once can be fertilized again. If phosphorus and potassium fertilizer are not used for the first time, 1. Spraying corn with 5000-fold solution of 4% high-yield element is beneficial to protein and chlorophyll synthesis and increases corn seed fullness.

IV. Prevention and control of diseases and insect pests: After corn lodging, diseases often occur. Corn leaf diseases such as corn leaf spot, rust, etc. Because of plant overlapping and high humidity in the field, ear rot occurred frequently. According to weather conditions and disease spreading conditions, harvest as soon as possible after the ear can be harvested, peel and dry, so as to avoid ear rot aggravation and insect and rat damage, resulting in greater losses. Timely control corn borer.