TECHNOLOGY FOCUS - BIOLOGY - Preferred Method: The method further involves proportionally and slowly adding inorganic fertilizer additives to aged hydrolyzate obtained in step (b) or concentrated solution obtained in step (c), continuously stirring and reacting the mixture for 30-45 minutes, evenly adding urea to the mixture, and continuously stirring the mixture for 10 minutes until the urea is completely dissolved, and adding preservative glycerol to the mixture, adding plant growth promoter triacontanol to the mixture, completely stirring the mixture, subjecting the mixture to ultramicro-homogenization using colloid mill, and testing the mixture to obtain second organic-inorganic plant total nutrient solution as fertilizer product. The method further involves proportionally and slowly dissolving trace elements for plants into the aged hydrolyzate or concentrated solution by stirring the solution, continuously stirring the mixture, reacting the mixture for 30-40 minutes until the association reaction is completed, where the association reaction occurs between multiple active groups of organic molecules and beneficial trace metal elements and nutrient solution to obtain stable chelate-complex mixed slurry, adding preservative glycerol and plant growth promoter triacontanol to the obtained mixed slurry, completely stirring the mixture, subjecting the mixture to ultramicro-homogenization process using colloid mill, testing the mixture to obtain third organic-inorganic plant nutrient solution with chelate-complex trace elements. The inorganic fertilizer is chosen from one or a mixture of nitrogenous fertilizer, phosphate fertilizer, potash fertilizer and/or secondary-nutrient-element fertilizer, and trace-nutrient-element fertilizer, where the fertilizer is chosen based on crop and fertilizer standard and specification. The aged hydrolyzate is substituted for fresh water to circulate in latex modulation before the squeezing and dewatering process and after solidification of natural rubber latex, and to maintain concentration of slurry, aged hydrolyzate and natural organic nutrient substances in plant nutrient solution, and create favorable conditions for treatment of waste from natural rubber processing.