半夏栽培生态学研究

目的 半夏栽培生态研究。方法 对半夏Pinellia ternata不同质量的种茎进行田间栽培实验。结果 半夏块茎收获量随种茎质量增加，但相对增重则随着种茎质量的增加而减少；子块茎、珠芽和种子数量随着块茎质量而增加，半夏繁殖系数随半夏种茎质量增大而增大；统计表明叶柄数量、地上部分干重、珠芽总数、最大株芽质量、花总数与种茎的质量呈极显著正相关；珠芽总数与叶柄数量呈极显著正相关；子块茎数与种茎的增重呈负相关，而叶柄数也与种茎增重负相关。结论 半夏栽培中营养生长与生殖生长、地上部分生长与地下部分生长相互制约。

Study on ecology in cultivation of Pinellia ternata

Object To study the relationship between weight of reproduction materials and parameters of its growth and propagation regime Methods Different weights of Pinellia tubers were used for asexual reproduction materials in field cultivation Results Weight of harvested tubers (dry weight, DW) increased with the weight of their reproduction tubers However, a negative correlation was found between relative weight increments of harvested tubers and the weight of their reproduction tubers, and positive correlations existed between the weight of reproduction tubers and quantities of sub clone tubers bulbils, seeds, or propagation coefficient Significantly positive correlations were also found between weight of propagation tubers and quantities of their petioles, aboveground biomass, bulbils numbers, maximum weight of bulbils, and spathes numbers Number of bulbils positively correlated with number of petioles significantly, and the number of sub clone tubers and petioles correlated with the increment of breeding tubers negatively Conclusion The interactions between the vegetative growth and reproductive growth, and aboveground growth and underground growth exist in the field cultivation of P ternata