Liu Tongping, Xiaojian Township, Xiangshui County, said on November 24th that his tens of acres of wheat had yellowed leaves, the roots of the diseased plants were yellowing and slightly dry, the field disease strain rate was 80%, and the wheat was currently at 6 Leaf period. A similar situation has occurred in other local wheat fields. Large areas of wheat have not been filled with water after sowing. Soybeans, corn and other droughts, crops and wheat fields are serious, and rice and wheat fields occur lighter. He asked what diseases the wheat had and how it was controlled.

According to Gu Wenliang, director of Xiangshui Planting Station in Xiangshui County, the local area has not experienced heavy rain for more than 50 days since mid-September, and the drought in the fields is serious. The lack of water in the soil will lead to the yellowing and atrophy of the wheat root system, which will affect the absorption of nutrients by the root system and show yellowing of the leaves and other symptoms. At present, the entire county has actively organized drought relief and seedling maintenance work, but some fields have not been able to fill water due to poor irrigation conditions. In addition, the damage of underground pests such as earthworms can also cause yellowing of wheat leaves and even dead seedlings.

According to Gu Wenliang's analysis, the wheat leaves of the above-mentioned plots were yellowed, the roots were yellow, and the roots were dry. There was no watering after sowing, which was probably caused by severe dry-water shortages. The yellowing of wheat seedlings in soybeans, corns, and other croplands is serious, but the occurrence of rice and wheat crops is lighter. This is because the soil moisture content of sown wheat fields is low, and the soil moisture is not supplemented after sowing. In this year's severe drought situation, wheat seedlings are more prone to symptoms such as yellowing of leaves due to lack of water; rice, wheat, and wheat fields have good sensation, and even if they are not irrigated for a long time after sowing, symptoms of water shortage are not important.

For fields with dry soil and yellow wheat leaves, irrigation should be done in a timely manner. Taking into account the poor growth of wheat roots, in order to promote the recovery of wheat seedlings, spraying 1% urea and 0.3% potassium dihydrogen phosphate mixed fertilizer solution, so that the leaves absorb nutrients and reduce the phenomenon of yellow leaves. Under conditions, humic acid salts, sodium nitrophenolate, amino acid compound microelement fertilizers, and alizarin lactones can be added to promote rooting and recovery of wheat seedlings.

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