| 高玉尧，许文天，徐建欣，张立群，王锋，张继川，聂秋海，刘实忠.不同种植密度对橡胶草主要农艺性状及生物量的影响[J].广东农业科学,2014,41(20):46-49 |
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不同种植密度对橡胶草主要农艺性状及生物量的影响 |
| Effects of planting density on main agronomic characters and biomass of Taraxacum kok-saghyz Rodin |
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| DOI： |
| 中文关键词: 橡胶草 种植密度 农艺性状 生物量 |
| 英文关键词: Taraxacum kok-saghyz Rodin planting density agronomic characters biomass |
| 基金项目:北京化工大学先进弹性体研究中心尧中国热带农业科学院湛江实验站合作项目（H2012177） |
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| 中文摘要: |
| 为了明确橡胶草区域适应性栽培的合理种植密度，在大田条件下设置行距*株距分别为20cm*20cm、20cm*30cm、20cm*40cm、20 cm*50cm、30cm*20 cm、30cm*30cm、30cm*40cm、30cm*50cm共8个密度处理，研究不同种植密度对橡胶草现蕾期和结实期主要农艺性状和生物量的影响。结果表明：当行距为20cm或30cm时，橡胶草现蕾期和结实期主要农艺性状和生物量均随着株距增加呈增大趋势，且行距为30cm时的主要农艺性状和生物量均比行距20cm的高；此外，不同种植密度下橡胶草的叶长、株幅、千粒重、鲜根重、干根重和根粗差异均达到显著水平袁而种植密度对花葶长度及花葶数量等影响较小，在行距*株距为30cm*40cm时，橡胶草的主要农艺性状和生物量较高，农艺性状也较好。因此，行距*株距为30cm*40cm是橡胶草区域适应性栽培较合适的种植密度。 |
| 英文摘要: |
| To obtain the reasonable planting density of regional adaptive cultivation for Taraxacum kok-saghyz Rodin，the effects of different plant densities on main agronomic characters and root biomass of T. kok -saghyz Rodin in squaring and solid stage were studied under field conditions, and eight planting densities of row and plant spacing including 20cm*20cm，20 cm*30cm，20cm*40cm，20cm*50cm，30cm*20cm，30cm*30cm，30cm*40cm，30cm*50cm were designed. The results showed that the main agronomic characters and root biomass of T. kok-saghyz Rodin in squaring and solid stage increased with the increase of plant spacing when the row spacing was 20 cm or 30 cm. The main agronomic characters and root biomass of T. kok -saghyz Rodin with the row spacing 30 cm were larger than those of T. kok -saghyz Rodin with the row spacing 20 cm. In addition, planting density had significant influences on leaf length, plant breadth, 1000-kernel weight, root diameter, fresh root weight and dry root weight per plant, but had little influence on length and number of scape. The main agronomic characters and root biomass of T. kok -saghyz Rodin with row spacing 30 cm and plant spacing 40 cm were good. Thus, the suitable plant density of regional adaptive cultivation for T. kok -saghyz Rodin was 30 cm*40 cm . |
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