THE EFFECT OF “LIANG-FENG-SU”ON INCREASING PRODUCTION OF SWEET POTATO

Treating sweet potato seedling with 33×10~(-6) "Liang-Feng-Su", by means of phosphorus-32 and carbon-14 tracing technique showed that the use of "Liang-Feng-Su" not only increased the root vigor and net photosynthetic efficiency of leaves, but also promoted the transport of photosynthate to root tubers which results in economic benefit.