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Chinese Agricultural Science Bulletin ›› 2016, Vol. 32 ›› Issue (34): 15-20.doi: 10.11924/j.issn.1000-6850.casb16060041

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The Relationship Between Cultivation Density and Growth and Quality of Sapium sebiferum and Sapindus Container-grown Seedling

Zheng Jian1, Ma Xiaohua1, Liao Liang2, Chen Qiuxia1, Qian Renjuan1, Zhang Xule1   

  1. (1Institute of Subtropical Crops of Zhejiang Province, Wenzhou Zhejiang 325005;2Yueqing Forestry Bureau of Zhejiang, Yueqing Zhejiang 325600)
  • Received:2016-06-07 Revised:2016-11-21 Accepted:2016-07-15 Online:2016-12-15 Published:2016-12-15

Abstract: In order to improve the seedling quality of Sapium sebiferum and Sapindus, the authors explored the influence of cultivation density on morphology change and seedling quality. Five cultivation density treatments were set to study the growth process and dry matter accumulation, leaf number and main root length of Sapium sebiferum and Sapindus. The results showed that under different cultivation densities, the differences in growth process of Sapium sebiferum and Sapindus were significant. The seedling height of Sapium sebiferum and Sapindus seedlings increased gradually with the increase of cultivation density, while the seedling height stopped growing when cultivation density reached a certain degree. The biomass of single plant and stem increased with the increase of cultivation density, and the percentage of qualified seedling of Sapium sebiferum and Sapindus decreased with the increase of cultivation density, which showed a negative correlation with cultivation density. Comprehensive analysis of seedling height, ground diameter, single seedling biomass, stem biomass, seedling morphological factor differentiation parameters, percentage of qualified seedling, qualified seedling number in unite area and other indicators indicated that when the cultivation density of Sapindus was 280-342 plant/m2 and that of Sapium sebiferum was 337-412 plant/m2, the percentage of qualified seedling grade was higher and growth morphology and plant quality were more coordinated.