| 1. | Blotchy irregular interveinal fading and orange - yellow chlorosis of older leaves , margins culed and sometimes scorched ; younger leaves remaining green
甜菜锰中毒：带有不规则斑点的叶脉间褪色，老叶变为桔黄色，边缘卷曲，有时枯萎，幼叶保持绿色。 |
| 2. | Profuse , small yellow - green chlorosis areas between dark green veins of older or mid - stem leaves , followed by numerous small brown necrotic spots
缺锰番茄叶片：老叶或茎中部叶片的深绿色叶脉上有大量的失绿黄化小区，随后转变成大量褐色坏死小斑点。 |
| 3. | Older leaves have ivory - tinted necrotic spots and shreaks coalescing into larger scorched areas ; some leaves show pale ( faded ) yellow chlorosis over whole surface of apical regions
缺钾的大麦叶片：老叶出现灰白色斑点，逐渐连在一起呈烧焦区域，有的叶片黄化一直到叶尖。 |
| 4. | In both evergreen and deciduous trees old leaves are continually shed throughout the growing season , but the remaining leaves are also shed at the onset of winter or a dry season in deciduous species
在植物整个生长季内，常绿植物和落叶树的老叶不断脱落，落叶植物残留的叶在冬季或干季也会脱落。 |
| 5. | 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。 |
| 6. | Older leaves ( except sometimes the first leaf and also cotyledons ) show bright yellow or orange blotchy interveinal chlorosis , leaf margins are inrolled . tips of leaflets scorch and leaves wither
番茄缺钼叶片：老叶（除此之外第一片叶和子叶有时也会）出现嫩黄色或橙色斑点的叶脉脉间失绿，叶缘不卷曲，叶尖端枯萎，叶片脱落。 |
| 7. | Older leaves first affected with bright yellow - green or yellow interveinal chlorosis , inrolling of margins , wilting , bleaching and withering before dehiscing prematurely ; youngest leaves and growing point persist for longest period
老叶首先脉间失绿呈嫩黄色或黄色，边缘不卷曲，在过早地裂开前白化并干枯，心叶和生长点能持续最长地周期。 |
| 8. | Passed through the woods , arrives the vast field , on the field stem leaf , some lao ye already yellow , but the small leaf also is revealing the green form , looks like does not give up takes off the summer day the green attire
穿过树林，来到一望无际的田野，田梗上的叶子，有的老叶已经黄了，可小叶子还露着绿色的身影，好像舍不得脱去夏日的绿装。 |
| 9. | Leaf to right : same potassium supply with additional ( luxury ) iron supply ; symptoms of potassium deficiency delayed in older leaves and especially evident in later younger leaves finally becoming more severe with increased iron supply
从左到右：钾的供应伴随着铁的供应，缺钾症会延迟出现在老叶上，后期的幼叶尤其明显，最后随着铁供应的增多，缺钾症状更加严重。 |
| 10. | 2 effect of k + nutrition and nacl stress on the growth and k + content of suaeda salsa plants the results showed that the increase in growth of suaeda salsa plant was mainly due to the increase of shoots
二拉营养和naci胁迫对碱蓬生长和k ”含量的效应碱蓬的生长主要以地上部分为主。 k “营养供给缺乏时，碱蓬分枝较少，长时间缺k ”培养，叶片瘦弱，叶黄，老叶受害明显。 |
