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| Study on the Effect of Fertigation Technology on Prolonging the Life of Sugarcane Ratoon |
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| DOI：10.16768/j.issn.1004-874X.2020.04.004 |
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| Abstract: |
| 【Objective】The effect of fertigation technology prolonging the life of sugarcane ratoon were studied in order to provide technical references for solving the problems of short ratoon life and low sugarcane yield.【Method】Through the application of fertigation technology, the optimal ratio of fertilizer was selected in new planted sugarcane and applied to the field management of sugarcane ratoon to study the ratoon life and related benefits.【Result】According to the field experiment, when the fertigation technology was applied to the sugarcane, the optimal ratio of fertilizer was urea of 450 kg/hm2, calcium magnesium phosphate fertilizer of 1 500 kg/hm2, potassium sulfate of 180 kg/hm2, compound fertilizer of 270 kg/hm2, organic fertilizer of 1 350 kg/hm2, and the application amount of chemical fertilizer was 20% less than that of conventional fertilization; the emergence rate, plant height, effective stalk number, cane weight and cane yield of ratoon sugarcane were significantly higher than those of the conventional fertilization. The ratoon life was up to four years, with additional income of 43 437 yuan/hm2.【Conclusion】The application of
fertigation technology in field management of sugarcane can prolong the ratoon life by two years, reduce the application amount of chemical fertilizer and increase the economic income, and should be widely promoted and applied to improve the quality of field management and yield of ratoon sugarcane, and to prolong the life of ratoon sugarcane. |
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