Evaluation of Soil Nutrient Characteristics in National Sugarcane Hybrid Seed Production Base
Comprehensive analysis of sugarcane soil nutrient content plays an important role in precise fertilization and soil fertility improvement of sugarcane.In February 2022,10 samples were collected at Sugarcane Hybrid Seed Production Base of the Institute of Nanfan&Seed Industry,Guangdong Academy of Sciences for soil nutrient determination and analysis.The result showed:①The average pH value of the soil in the study area was 6.06,which was at a weak acid level.The average contents of organic matter and total nitrogen were 19.39 and 0.95 g/kg,which were at a lack level.The average total phosphorus content was 0.8 g/kg,which was at a moderate level.The available contents of phosphorus and total potassium were 28.29 and 30.6 mg/kg,which were at a high level.The variation coefficient of alkaline hydrolysis nitrogen and available potassium was large,the spatial distribution was uneven,and it was at a high level;②The contents of heavy metals arsenic,cadmium,copper,lead,mercury,nickel,and zinc did not exceed the risk screening value;③Soil pH was positively correlated with total nitrogen,alkaline hydrolysis nitrogen,total phosphorus,available phosphorus,and calcium,and negatively correlated with molybdenum.Organic matter was significantly positively correlated with total nitrogen,alkaline hydrolysis nitrogen,total phosphorus,available phosphorus and calcium.Total nitrogen was significantly positively correlated with alkaline hydrolysis nitrogen,total phosphorus,available phosphorus and calcium.There was a significant positive correlation between alkaline hydrolysis nitrogen and available phosphorus,available potassium and calcium.Available phosphorus was significantly positively correlated with available potassium and calcium.In summary,it is suggested that Sugarcane Hybrid Seed Production Base should pay attention to soil acidification control,appropriately increase organic fertilizer,and rationally apply nitrogen,phosphorus,potassium fertilizer and mineral element fertilizer to further improve the yield and quality of sugarcane.
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