After spring wheat turns green, yellowing often occurs. Recently, many farmers have called the city's Sannong Hotline to inquire about this issue. Li Guoheng, the head of the city's agricultural technology station, is likely to cause the yellowing of the wheat leaves. The reasons for this and the treatment measures are as follows. The first is that the time for sowing wheat is late, and the wheat is generally more seeded. This results in some wheats having too much density, which directly affects the photosynthesis of wheat, resulting in insufficient supply of nutrients and yellowing of the leaves. Second, after the wheat was frozen, it showed yellowing of the lower leaves. The third is the yellowing of leaves caused by insufficient fertilizer. The fourth is drug poisoning. The main poisons causing wheat seedling poisoning are herbicides. Based on the above circumstances, the following management measures can be taken: First, fertilizer and water management should be strengthened according to the situation. If the base fertilizer is adequate, water has been poured after the year, and the field is not very dry. The main crops should be ploughed to promote the growth of wheat seedlings. If the base fertilizer is insufficient, there will be no watering after the year and severe drought in the field. The management of fertilizer and water shall be strengthened in a timely manner. Fertilizer is applied before watering, and quick-acting fertilizers such as ammonium bicarbonate and ammonium sulfate are mainly used, and urea is not suitable for slow conversion at low temperatures. Appropriately increase potassium fertilizer to promote the growth of wheat seedlings. The second is to use a special wheat regulator to promote the rooting and strengthening of wheat before the wheat returning green period to the wheat jointing, shortening the internodes, enhancing the disease resistance, and preventing lodging. The third is to pay attention to pest control. Clarithromycin Granules,Clarithromycin Granule Saling,Treat Variety Of Bacterial Infections,Bacterial Infections Product Drug SHANDONG XINHUA PHARMACEUTICAL Co., Ltd. , https://www.sdxinhuapharm.com