At present, it is a critical period for the management of summer corn. In response to the current growing trend of the corn and the climate characteristics of this year, the management of corn in the later period should be done in time to ensure the increase in production in autumn.

Supplementing granulation fertilizers and timely applying water and supplementing granulated fertilizers are important links for realizing high yields of corn. In this period, lack of fertilizers will also affect corn production. Only supplementing good grain fertilizers can ensure that maize will not be defertilized in the later stages of the crop and achieve large spikes and many grains. Grain quality is good. Generally, the land will be supplemented with about 10 kilograms of urea during the tasseling period, immediately after fertilization, it will be watered or fertilized before rain, and the task of top-dressing and watering will be completed in mid-August. Watering should look at the sky, look at the time, and look at the lyrics. In the latter stage, if there is rain, we must pay attention to timely drainage. When the soil water content exceeds 80%, it will cause root oxygen deficiency, lead to premature root failure, and reduce grain weight. Therefore, it is equally important to promptly complete the corn field drainage.

The management of lodging corn has seen more rains in the near future, and local corn has fallen to varying degrees. Lodging causes the lateral roots of corn to pull up, the angle of tilting the stem is larger, and even the ground is tiled, and the leaves and ears are attached to the ground, the moisture is slowed down, the light is reduced, and the photosynthetic intensity is weakened, which will reduce the yield and prolong the ripening time of the corn.

Due to the fact that the rain has been too soft recently, it is not easy for corn to fall. If you want to help, you must raise the stems within two to three days after lodging. When lifting, it is necessary to keep the stem and the ground at an appropriate angle, 30 to 50 is appropriate, too straight, will hurt the root of the other side. If you have a long lodging time, don't help it anymore. For corn lying on the ground, turn the ear upside down, do not touch the ground, otherwise it will easily rot.

Timely Control of Diseases and Insect Pests The major pests of maize in the later stages are aphids, leaf spot diseases and bacterial wilt. Prevention and control of aphids with pyrethroids, organophosphorus pesticides can be, such as hydrogen, pyrethroid, dimethoate, monocrotophos, etc., can also play an effective prevention and control of other pests. The major causes of spot and bacterial wilt are prevention. The main purpose is to strengthen the cultivating and weeding in the field, drain the water after the planting, disperse the humidity and reduce the temperature, and maintain the suitable microclimate in the field.

Detasseling can increase the production of corn emasculation to prevent and control diseases and insects, increase the light transmittance, regulate the microclimate in the field, promote early maturing of corn, and significantly increase yield. Generally, when the tassels of the male and female ear were first drawn, they were detasseled, or the flowers were pollinated, and the filaments began to dry. When the weather was fine, the tassels were all cut off, which not only improved the lodging resistance but also improved the light conditions.

Appropriate harvest timely harvest can ensure that corn has enough grouting time, which is an effective measure to increase grain weight and increase production and income. The standard of corn maturation is the disappearance of light milk, and the general variety will reach the standard within 45 to 50 days after tasselling at the end of September. The grain weight is highest at this time, so the corn harvest period should be delayed as long as it does not affect the timely cultivation of wheat. .

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