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机械收割对不同种植行距宿根蔗苗期生长的影响
作者: 秦培钊1  罗 艺2  米 超2  陈超君2  邝伟生1  黄 严3  莫清贵4  陆国盈2  梁 和2 *  
单位: (1 南宁市农业技术推广站  南宁 530001;2 广西大学农学院  南宁 530005; 3 南宁市农业机械化技术推广服务站  南宁 530001;  
关键词: 机械收割  种植行距  宿根蔗  苗期  生长  
分类号:S566.104.8
出版年,卷(期):页码:2012 ,43 ( 2 ): 页码:236-240
摘要:

【Objective】This experiment was aimed to find out the optimal row spacing for mechanically harvested in sugarcane plantations in order to decrease the damage to sugarcane stubble and plant-soil environment, and to improve harvesting efficiency and economic benefits. 【Method】 Different planting row spacing (1.0, 1.1, 1.2 and 1.3 m) was used in sugarcane planting and sugarcane was harvested manually as well as mechanically. After harvesting, the underground bud growth, cracking degree of sugarcane stubble and agronomic and physiological parameters were investigated at seedling stage. 【Result】Data showed that mechanical harvesting impacted on underground buds of ratoon cane and sugarcane stubble cracking to some extent, in particular the mortality rate of upper buds was higher compared to that in manual harvesting. Sprouting of ratoon cane was not affected by mechanical harvesting. In mechanical harvesting treatment, chlorophyll content in leaf +1 was higher than those in manual harvesting, while root activity was generally lower in mechanical harvesting compared to that in manual harvesting. In mechanical harvesting treatment, the row spacing of 1.2 m influenced sugarcane stubble cracking most slightly and recorded low mortality rate of upper and lower buds, the highest number of sprouting, and high chlorophyll content and root activity. 【Conclusion】 Mechanical harvesting resulted in greater stubble cracking degree and higher damages to upper buds, however, both problems were reduced significantly with gradual increase in row spacing. The row spacing of 1.2 m was found suitable as it not only enhanced the efficiency of mechanical harvesting, but also improved the shoot growth of ratoon cane.

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