Effects of Fertilization and Water Treatment on the Root Tuber Yield of Annual Polygonum multiflorum Thunb.
To explore the field management method of water and fertilizer for the growth of annual Polygonum multiflora;The method of pot culture in greenhouse was adopted,and the orthogonal design of experiments was L9(34).The results showed that the four factors of ni-trogen,phosphorus,potassium and water affected the root tuber yield of annual P.multiflora in the order of soil water capacity,phosphorus fertilizer,nitrogen fertilizer and potassium fertilizer;the effects of W and P on the root tuber yield of P.multiflora reached a very significant level,while N and K did not reach a significant level;the yield showed a trend of first increasing and then decreasing with the increase of soil moisture capacity,and the maximum yield appeared at 297.86 g/plant when the W factor was W2;The maximum root tuber weight of P.mul-tiflora of each treatment varied from 24.57 to 80.95 g;The maximum root tuber weight of P.multiflora was significantly positively correlated with its yield.The suitable soil moisture for annual P.multiflora yield is 65％field capacity,and P2O5 2.16 g plant for phosphate fertilizer.
Polygonum multiflorum Thunb.fertilization and wateroot tuberyield
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