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马铃薯起源于南美洲的智利和秘鲁的安第斯山区,那里属热带高原地区,光照强,所以马铃薯具有喜光的特性。光合作用随光照强度的增强而增大,光照强度不仅影响干物质重而且影响同化产物的分配和植株的发育,强光照有利于马铃薯地下部生长,块茎形成早,块茎产量及块茎干物质含量较高。而弱光照仅利于地上部生长,延迟块茎形成,块茎小。据波贾卡利阿研究,光照强度从自然光照的67%降低到33%,会使块茎重剧降80%,说明光照强弱对马
Potatoes originated in South America, Chile and Peruvian Andes, where the tropical plateau, light, so the potato has a light-emitting characteristics. Photosynthesis increased with the increase of light intensity. The light intensity not only affected the weight of dry matter but also affected the distribution of assimilation products and the development of plants. Strong light was beneficial to the growth of potato, early tuber formation, tuber yield and dry matter content of tubers high. The weak light only conducive to the growth of the shoot, delay the formation of tubers, tubers small. According to the study of Pojagalia, the reduction in light intensity from 67% of natural light to 33% would result in a sharp 80% reduction in tuberosity, indicating that the intensity of light on the horse