Effects of combined application of organic and inorganic fertilizers on nutrient uptake,quality and yield of ginger
The irrational fertilization phenomenon is common in ginger production in our country.Studying the effects of different organic and inorganic fertilizer dosages and ratios on ginger growth,nutritional quality,and yield can provide reference for efficient fertilization and high-quality ginger production.At the same time,it is also an important measure to improve ginger production efficiency and protect the ecological environment.Under field conditions,using Shandong Laiwu ginger(Zingiber Officinale Roscoe)as the test material,organic and inorganic fertilizers were used as experimental factors.A two-factor,three-level complete block design was adopted,with a total of 9 treatment combinations,including low,medium,and high levels of organic and inorganic fertilizers.All organic and inorganic fertilizers were applied as base fertilizers.At the mature stage of ginger,three samples of ginger from each plot were randomly collected to measure growth parameters,nutrient absorption,quality indicators,and yield.The study found that the combined application of various organic and inorganic fertilizers promoted ginger growth and development,increased the absorption of mineral elements such as N,P,K,Fe,Zn,improved ginger quality,and increased ginger yield.Comparatively,treatment T6(organic fertilizer 45 t·hm-2 + compound fertilizer 2.25 t·hm-2,i.e.,applying organic fertilizer N+P2O5+K2O=400.5+1390.5+1165.5 kg·hm-2,and applying compound fertilizer N+P2O5+K2O=337.5+135+450 kg·hm-2)had the best overall effect and was the best fertilizer treatment combination.Compared with the control,it increased the N,P,and K contents in the aboveground part and ginger rhizomes by 30.07%and 25.57%,31.73%and 67.68%,43.33%and 62.37%,respectively;and increased the contents of soluble sugars,soluble proteins,gingerols,and curcumin in ginger rhizomes by 32.42%,54.15%,35.10%,and 49.25%,respectively.The yield of ginger in each treatment was increased from 15.76%to 66.38%.The experimental results indicate that the combined application of organic and inorganic fertilizers can effectively promote ginger growth,improve nutrient absorption,enhance ginger rhizome quality,and increase ginger yield.Considering all factors,the best agricultural fertilization scheme is organic fertilizer 45 t·hm-2-+ compound fertilizer 2.25 t·hm-2,which is worth promoting and applying in related areas.
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