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对冷害后存活的棉花的出叶及干物质进行了分析。结果表明 :随着棉苗损伤程度的加重 ,棉苗出现第一真叶的频率显著增大 ;真叶出现的频率与单株真叶干物质重呈显著正相关 ;第一真叶展平棉苗的单株真叶干物质重与真叶出现棉苗的单株真叶干物质呈显著正相关 ;一片子叶完好或损伤轻微 ,另一片子叶损伤严重的棉苗第一真叶出现的频率很高 ,单株真叶干物质的累积最快。
The leaves and dry matter of cotton survived after cold damage were analyzed. The results showed that the frequency of the emergence of the first true leaf was significantly increased with the increasing degree of cotton seedling damage. The frequency of emergence of the true leaf was positively correlated with the dry weight of the true leaf of the plant. The dry matter weight of the true leaves was positively correlated with the leaf dry matter of the true leaves of the true leaves. One piece of cotyledons was intact or slightly damaged, and the first true leaf of the cotton seedlings with severe cotyledons damage was found to have a high frequency, The true leaves dry matter accumulation of the fastest.