萝卜糠心又称空心,即肉质根木质部中心部分发生空洞的现象。1.发生原因(1)品种。肉质根薄壁细胞大的品种,肉质根密致程度差,易出现糠心。(2)土质。沙质过重的土壤栽培的萝卜比壤土或黏土中栽培的萝卜会早出现糠心。(3)供水。生长期间前期水分均匀,但后期干旱,尤其在肉质根形成期,土壤缺水,生长受阻,从而出现糠心。(4)种植密度。株行距较宽的条 Radish bran heart, also known as hollow, that is, the root part of the root cause of woody hollow phenomenon. 1. Reason (1) breed. Fleshy root parenchyma cells of large varieties, fleshy root density is poor, prone to heart. (2) soil quality. The overgrown soil The radish cultivated earlier than the radish cultivated on loam or clay. (3) water supply. Early stage of the growing water moisture, but the late drought, especially in the fleshy root formation period, soil water shortage, growth retardation, resulting in chaff heart. (4) planting density. Strands row spacing of the bar