The Growth Effect Of Sugarcane With Different Planting Patterns And Row Width

According to Machinery specification, variety characteristics, local soil condition and the predecessors’ researches about sugarcane row spacing, the paper set four plant row spacing of1.0m,1.1m,1.2m,1.3m with the two rows of sugarcane planting machine-Meiruo. The present study analyzed the affection of the two patterns of mechanical and artificial planting, and four row spacing on sugarcane agronomic traits, physiological and biochemical indexes? yield,quality and so on, sought the best suitable row spacing specification of mechanical planting, to understand the adaptability of the advanced sugarcane mechanical planting further more, perfect the reserve of agronomic technology matched with mechanical planting, and give the theoretical reference for extending the technology of mechanical planting, and promoting high yield and the whole process mechanized. The main results were as follows:1. The effect of sugarcane growth with different planting patternsThese results showed that, the sugarcane seedling emergence rates were lower, and the seedling missing rates were higher with mechanical planting than artificial planting, and then caused yields reduction by insufficient effective stalks in harvest, which would be one of the main reasons of limited its application. Mechanical planting was not obviously effective for sowing in the shallow soil layer, but significantly in deep soil. With the soil compaction increased, the sugarcane roots growth were affected, the ability of roots system to nitrogen absorption decreased, and then leaded to that, in the early growth period, the sugarcane stem elongation、physiological and biochemical indexes and so on, were the slightly weaker than artificial planting, but in the late period, these negative factors were gradually eliminated and the sugarcane grown stronger. The results indicated that: diameters and stalk weight were slightly better with mechanical planting than artificial planting, which partly compensated the yield losses by effective stalks reduction, and in spite of the yield were lower than artificial planting, but not significantly. And sucrose content and the brix were higher with mechanical planting than artificial planting, and sugar yield per acre were also higher than artificial planting, but not significantly. From the above, the two different planting were not significantly affection about the sugarcane growth.2. The effect of sugarcane growth with different planting row spacingThis study showed that, in accordance with the actually quantity of planting of local large area production, the sugarcane seedling emergence rates per666.7m2were1.1m>1.0m>1.2m>1.3m, and the seedling missing rates per666.7m2were1.0m>1.3m>1.2m>1.1m.All of the stalk elongation speeds, chlorophyll content, nitric acid restore enzyme activity, soluble protein content and roots vitality in different treats, were maintained in high level between tillering and elongation stage, were best in elongation stage, and gradually fell to minimum in mature stage. The change trends of all treats’ indexes were similar with each other, and increased along with the width of row spacing. The soil bulk densities of different soil horizon were not significant differences in various periods. From the yield and quality of sugarcane, in conclusion, in the planting row spacing of1.1m, the seedling emergence rates were highest, the seedling missing rates were lowest, the stalk length were tallest, the stalk weight were heavier, the effective stalk, yield and sugar yield per acre were all highest, the sucrose content and the brix were also highest, the sugarcane apparent purity, gravity purity, fiber content were better, and the reducing sugar content were lower, it was the optimal row spacing in the study.