Lodging Experts for Wheat Weapons

Recently, reporters have received calls from readers from Yuncheng, Shanxi, Shaanxi Xi'an, Xianyang Xingping, Lincang, and other places in southern Anhui. They said that they planted more serious wheat defoliation and they did not know what to do. On this issue, the reporter interviewed Wang Rui, an associate researcher at the Agriculture College of Northwest Agriculture and Forestry University. She said that due to the recent heavy rain and high winds, some of the wheat areas in China have been plagued. Farmers must take effective measures to correct the symptoms, restore the wheat after lodging, and recover losses.

Lodging type

Lodging that occurs before the grain filling stage of wheat is called "early lodging". Since "head light" can generally be restored to different levels, it can be erected. Late lodging during the grouting period is called "late lodging". Since the "head weight" is not easy to fully restore upright, only the spike and the stem below the ear can be lifted up. Remedial measures must be taken in time to reduce the lodging loss.

Causes of lodging

Climate factors. During the grain-filling period of wheat, large areas of wheat can be laid down due to strong winds.

Improper cultivation practices. If the broadcast volume is too large, the stalks are weak and prone to lodging. In late May, about ten days before the wheat was ripened, a high-yield field with wheat yellow water was poured. The soil was soft and the weather was prone to lodging in varying degrees. In addition, the lodging resistance of different wheat varieties is also somewhat different.

Remedy

First of all, it is necessary to dredge the field drains to eliminate the accumulated water. After the heavy rain, timely drainage work should be done to the wheat, so as to avoid causing the lodging of wheat again, affecting the late growth and normal harvest of winter wheat.

Secondly, after the rain is fine, use bamboo stalks to gently shake off the raindrops on the stems and leaves, reduce the pressure and help them rise, but do not avoid provoking and disrupting the backward direction, or use hands to support the wheat and the bundle to reduce the rottenness. It is conducive to ventilation and light transmission, enhancing photosynthesis, and increasing the weight of the grain. To a certain extent, it can restore the losses caused by lodging.

The second is to spray potassium dihydrogen phosphate to 150-200 grams per mu, or 16% of the 50-60 kg liquid extract of grass ash to promote growth and grouting.

In addition, farmers must strengthen the prevention and treatment of diseases during this period. The prevention of wheat sheath blight, ferret disease, aphids, etc., is the main method of prevention and comprehensive prevention. Once the prevention and control indicators are met, timely spraying, increasing wheat's resilience and lodging resistance, and reducing losses through comprehensive prevention and control.

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