摘要
１９９１～１９９３年通过大田试验，对棉花不同群体干物质在各器官的积累与分配规律进行了曲线拟合。结果表明，各器官干物质积累均呈不同程度偏斜的Ｓ形曲线，而棉株干物质在各器官间分配规律则因器官的不同各有不同。根、果枝及果枝叶呈抛物线形曲线，主茎为ｙ＝ａｘｅｂｘ形曲线，主茎叶为ｙ＝（ａ＋ｂｘ）／ｘ形曲线；蕾为“钟形”曲线，铃呈Ｌｏｇｉｓｔｉｃ曲线。此外，对群体密度的影响也进行了探讨，在试验密度范围内，群体密度的影响主要表现在干物质积累量上，对各器官的积累与分配规律的影响无明显差异。
Based on field experimental data collected from 1991-1993,dry matter distribution ratio simulating models for different cotton organs were developed.Results showed that dry matter accumulation models in different organs were S shape curve,while dry matter distribution ratio were different in cotton organs.In root,fruit branch and branch leaves,the dry matter distribution ratio model is y=c+bx+ax 2,in cotton stem,the model is y=axe bx ,in stem leaves,the model is y=(a+bx)/x,in bud,the model is y=ae bx^2 ,and in boll,the model is Logistic function.Besides,the paper had discussed the effects of population density of cotton,which mainly affected the amount of dry matter accumulation,the effect on the dry matter distribution ratio for different organs was not significant.
出处
《华北农学报》
CSCD
北大核心
1997年第3期53-59,共7页
Acta Agriculturae Boreali-Sinica
基金
山西省自然科学基金
关键词
棉花
干物质积累
分配
群体密度
数学模型
Cotton
Dry matter accumulation and distribution
Population density
Mathematical model
