The Research On The The Regulation Of Ratoon Sugarcane Yellow Seedling

This experiment is conducted in Chongzuo Fusui Xinning Town,by spraying foliar application(abbreviations referred to as fertilizer) of FeSO4,FeC6H5O7, MnSO4, ZnSO4, MgSO4,H8MoN2O4, Na2B4O7·10H2O,with foliar application of distilled water as contrast.Research and analysis the changes of indicators on soil fertility, the green rate, chlorophyll, plant height, stem diameter, effective number of stem and yield of sugarcane stem and sugarcane leaf elements, examining the effect of spraying regulation.The results are following:1The pH value,quick-impact N,quick-impact P, quick-impact K,organic matter content of yellow seedlings cane are less than normal seedlings cane, and the two exist an explicit sexual differences; contrast analysis of yellow seedlings and normal seedlings soil mineral elements content found, the index content exist an explicit sexual differences, which of the yellow seedlings of soil effective sulfur content and available potassium content are higher than the normal, other elements content are less than the normal.It follows that imbalanced soil fertility caused the main factors of ratoon sugarcane yellow.2After spraying the Micro-fertilizer, analysis and comparison the situation of yellow seedlings and yellow-green seedlings in the entire district, results indicate that sprayed FeSO4,FeC6H5O7, MnSO4, ZnSO4, MgSO4,H8MoN2O4, Na2B4O7·10H2O can improve the ratoon sugarcane yellow seedling’s yellowing phenomenon, prompting the yellow seedling turning green, with the best sprayed FeSO4.3The three periods of spraying the Micro-fertilizer, the effects of treatments on chlorophyll content of etiolated seedlings; which sprayed FeSO4,MgSO4and FeC6H5O7treatment of the chlorophyll content in three times is higher than the control, conjectured:Sprayed FeSO4,MgSO4and FeC6H5O7can improve the content of chlorophyll. 4At different periods, after spraying different treatment, the element content in leaves and existed some differences with contrast, but the trend of the content of the processing elements are different.conjectured:Different treatments at different times to etiolated seedlings inconsistent with the normal effect of element contents in Leaves of seedlings.5Plant height area, in the three periods, different treatment and contrast are existed certain differences, during the process of spraying zinc sulfate on three of periods which is higher than the control.6On the technological quality of sugarcane, spraying trace elements can improve the sugarcane gravity purity and sucrose, compared with other treatments, spraying ferric citrate works best.7On the production, the Fe treatment is higher than other treatment, and existed the significant differences with control, and the other did not exist significant differences with the control. So conjectured:Spraying ferrous sulfate can significantly improve the yield of sugarcane.