| Abstract Chelated trace fertilizer can increase the efficiency and utilization ratio of trace element fertilizer, while the selection and manufacture of a cheap and easyly available chelator of high chelate properties are the key to wide application of chelated trace fertilizer. The chelate properties of ��-amino-acid mixture are demonstrated based on chelate theory. The condition and method of producing cheap chelator and chelated trace fertilizer using animal cutin protein-cockwool,duckwool and other industrial wastes as raw material were determined by experimental study. The agricultrual chemical experiments proved that amino-acid chelated trace fertilizer had good effect on the plant growth during the whole growth stage. |
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1996, Vol. 13 
