萝卜在不良的自然与栽培条件下,往往会引发多种生理病害,严重影响其产量和品质,常见生理性病害的发生原因及有效防治措施如下:1、缺素症。(1)缺氮:植株生长缓慢,叶窄而薄,叶色发黄,茎细弱,根发育不良,细而小,多木质化,果实辣味增强。(2)缺磷:叶背呈紫红色,叶小而皱缩。(3)缺钾:叶色深绿,叶缘卷曲,呈淡黄色至褐色,下部叶片和茎杆显现深黄至青铜色,叶片增厚,根部不正常地膨大。2、畸形根。雨水大或灌水太多,造成土壤板 Radish under adverse natural and cultivation conditions, often lead to a variety of physiological diseases, seriously affecting its yield and quality, the causes of common physiological diseases and effective prevention and treatment measures are as follows: 1, the lack of disease. (1) Nitrogen deficiency: Plant growth is slow, leaves narrow and thin, leaf color yellow, thin stem, root dysplasia, small and small, multi-lignification, fruit spicy enhanced. (2) Phosphorus deficiency: leaves back was purple, leaves small and shrinking. (3) Potassium deficiency: Leaf dark green, leaf edge curly, pale yellow to brown, the lower leaves and stems appear deep yellow to bronze, thickening of the leaves, the root is not normal swelling. 2, deformed roots. Heavy rain or irrigation, resulting in soil plate