| Shrimp peptide amino acid foliar was rich in active amino acid, chitin, astaxanthin, shrimp cephalin, chitosan and
microelement, could effectively increase crop resistance to pests and diseases while comprehensively supplying plant nutrients. Shatang citrus was used as experimental material, effect of shrimp peptide amino acid foliar fertilizer on shatang citrus was analyzed in aspect of changes in agronomic traits, pest-resistant capacity, yield and economic benefits. Result showed that shrimp peptide amino acid foliar fertilizer effectively promoted shatang citrus blade increasing and thickening, increased the fruit stem diameter and weight, improved fruit set percentage as well as significantly improved the shatang citrus resistance to pests and diseases (the mite incidence decreased by 37.5%, the disease species decreased by 33.3%). Etiolated tree incidence decreased by 77.8%. The yield of shatang citrus increased by 18.6%. The input-output ratio was 1：13.9. The economic benefit was significant. |
