necrotic patches meaning in English
坏死斑
Examples
- Blotchy interveinal yellow - green mottling and marginal yellowing of expanded leaflets ; irregular brown necrotic patches ; wavy margins and down - curved leaf tips
矮生菜豆缺锌：带泡的脉间形成黄绿色斑纹,展开的小叶边缘黄化及不规则的褐色坏死斑点,波浪形边缘,叶尖向下卷曲 - Younger leaves faded green and lusterless ; older leaves marginal scorch , interveinal blotchy chlorosis , necrotic patches bleaching and withering ; characteristic of some soil acidity conditions
甜菜锰和铝合并中毒：幼叶褪绿失去光泽，老叶边缘枯黄，脉间有坏死褐色斑点，接着白化，枯萎。这是酸性土壤特有的。 - Numerous small rounded dark brown or black necrotic patches in green leaves ; patches often in groups or rows close to midrib or major lateral veins , towards centre or basal areas of leaflects ; petioles green and healthy
缺锰的马铃薯叶片：叶片上有大量深褐色或黑色坏死小圆斑，叶的主脉或大部分侧脉附近有条状斑纹，向叶中部和基部扩散，叶柄正常并保持绿色。 - Foliage dull pale or yellow - green with slight orange tinting ; irregular brown necrotic patches especially near bases of leaflets or in lateral leaflets ; petioles down - curved giving pronounced convex leaf profile with leaflets coiled or twisted towards undersides
番茄缺锌：随着果实轻微变成橙色叶片有暗斑并黄绿相间，不规则的褐色坏死斑点,尤其是小叶的基部或侧边小叶,叶柄向下弯曲,随着小叶向下侧卷起呈圆形或螺旋形