If boron deficiency in cauliflower is not controlled, it will lead to a decrease in yield, affecting quality and production efficiency. The symptoms and prevention methods of boron deficiency in cauliflower are described below for reference. 1. Symptoms. The main reasons for the lack of boron are that the stems and leaves are stiff and easy to fold; the growth of the parietal lobes is blocked; the leaves curl outwards; the shape of the leaves is thickened; the midribs of the leaves are thickened and thickened; the yellow leaves begin to appear yellow from the lower leaves; yellowish-brown patches appear outside the flower stems; In the hole, the interior of the serious flower stem is rotted brown, leading to the hollow part of the marrow (as shown in the figure); the root system is short and thick, and the growth is not good; the flower head is small, showing yellow-brown spots, and the serious inflorescences die. 2. Control methods. (1) Add organic fertilizer. Organic fertilizer can make the soil fertile, enhance soil water retention, promote root development, and promote boron uptake by plants. At the same time, it also contains trace elements needed for the growth and development of cauliflower. (2) Application of boron fertilizer. Before cauliflower planting, combined with the application of organic fertilizer, apply 0.5 to 1 kg of borax per acre, mix it evenly with organic fertilizer, or mix evenly with 5 to 10 kg of fine dry soil, and spread it on the surface to the ground to avoid uneven application of boron fertilizer. Caused excessive local boron hazards. (3) Reasonable irrigation. During the growth of cauliflower, reasonable watering to ensure a balanced supply of water to prevent soil drought or too wet, so as not to affect the absorption of boron in the roots. (4) Boron spraying. If the previous management measures are improper, when the symptoms of boron deficiency occur during the growth of cauliflower, the foliar spraying of 0.1% to 0.2% borax solution should be promptly applied, and spraying should be conducted 7 to 10 days, with 2 to 3 injections. Air Filter,Air Compressor Filter,Air Compressor Air Filter,Oil Water Separator For Air Compressor Hangzhou Zhongju air separation equipment manufacturing Co., Ltd , https://www.hzzjkfzz.com