| 词汇 | chlorosis |
| 释义 | chlorosis noun[ U ] uk /kləˈrəʊ.sɪs/ us /kləˈroʊ.sɪs/ chlorosisnoun[U] (PLANT DISEASE)biology specialized a lack of chlorophyll in green plants that causes the leaves to become yellow, caused by disease, lack of particular minerals, low light levels, etc.: A soil with a high active lime content can induce chlorosis. Yellowing leaves indicate over-watering or chlorosis. Iron sulphate's main use is as a quick-acting source of iron in cases of chlorosis on soils where iron is in short supply. Alkaline soils can result in iron chlorosis, which appears as yellowing of the leaves. Lime-induced chlorosis looks terrible: yellow, unhealthy leaves with only the veins picked out in green. Plant pathology anthracnose antifungal apple scab ash dieback auxin canker dry rot Dutch elm disease etiolated excrescence fungicidal fungicide leaf scorch leaf spot nodal organophosphate pesticide potato blight scald sterility chlorosisnoun[U] (MEDICAL CONDITION)old-fashioned a medical condition caused by not having enough iron in the blood, especially in teenage girls. anaemia is now the preferred term. Disorders & diseases of the heart & blood acidosis acquired agammaglobulinemia adult-onset diabetes afib agammaglobulinemia anaemic apoplexy coarctation of the aorta congenital erythropoietic porphyria congestive heart failure coronary heart disease coronary thrombosis decompression sickness furred MGUS mini-stroke mitral monoclonal gammopathy of unknown significance monocyte disorder toxaemia Examples of chlorosischlorosis Unlike spotted alfalfa aphid, vein chlorosis was not observed after spotted clover aphid feeding in this experiment. Generally speaking, the first symptoms involve chlorosis of young fronds. The chlorosis and necrotic patches spread to the young fronds and fronds in the middle crown. This disease caused chlorosis followed by blighting of the leaves. Generally, the concentrations tested in these products were toxic to the tissues: in most cases, chlorosis appeared within three to five days; at other times, the whole tissue appeared burned. Leaf injury (chlorosis) was estimated on a visual scale, in which 0 = no visible injury, 1 = 1-5%, 2 = 5-50%, 3 = 50-99 % and 4 = 100%. Symptoms on the leaves begin as clear veins that turn corky, which is then followed by chlorosis and cupping of the leaf. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The first symptoms of infestation are typically poor plant growth, chlorosis, and wilting. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Typical symptoms include the chlorosis of leaves, stunting, and distorted and lumpy fruiting structures. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Symptoms in the above-ground plant tissue can include chlorosis of the cotyledons and necrosis of the epicotyls and/or hypocotyls, stunting, and wilting of foliage. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Because nitrogen is mobile, the older leaves exhibit chlorosis and necrosis earlier than the younger leaves. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The young emerging leaves develop interveinal chlorosis leading to discoloration of the leaves, starting from tip downwards. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It prefers full sun and well-drained, acidic soil, often developing chlorosis if grown in overly alkaline soil. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It selectively induces chlorosis in several germinating seedling plants. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Aside from exhibiting phyllody, they may also exhibit other symptoms like virescence, witch's brooms, chlorosis, and stunted growth. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
| 随便看 |
反思网英语在线翻译词典收录了377474条英语词汇在线翻译词条，基本涵盖了全部常用英语词汇的中英文双语翻译及用法，是英语学习的有利工具。