Zhaokua Town was selected as the test site.By setting 6 different allocation schemes of three plant growth regulators,namely oligoiodide,5％amino-oligosaccharide and chitosan oligosaccharide,the potato growth and yield indexes under different plant growth regulator allocation were evaluated from 2 perspectives,and the effects of plant growth regulator seed dressing on pota-to growth and yield were explored.In order to provide experimental data basis for scientific planting of potato.
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