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一、从子叶上观察 1、两片子叶出土后扭曲翻转、较小而薄,是种子不成实。 2、子叶深绿无光泽,叶尖向下耷拉,是温度低;有部分烂脖是湿度大、温度低。 3、子叶过小、颜色黑绿是底水不足、温度低。 4、子叶色浅、大而薄、脚高,是底水大、温度高。 5、子叶先退绿变黄,不久脱落,是水过大、温度低。 6、子叶干枯发黄,然后脱落,是缺水。二、从真叶和茎上观察
First, the observation from the cotyledons 1, two cotyledons unearthed after the twisted flip, smaller and thin, the seed is unrealistic. 2, dark green cotyledon, tip pull down, is the temperature is low; some rotten neck is humidity, low temperature. 3, cotyledons is too small, dark green color is the end of lack of water, low temperature. 4, color cotyledons, large and thin, high feet, is the end of the big water, high temperature. 5, cotyledons back green turn yellow, soon fall off, the water is too large, low temperature. 6, cotyledons dry yellow, and then fall off, is a lack of water. Second, observe from the true leaves and stems