Study On The Physi-ecological Base Of Yield-increasing Of Humic Acid Fertilizer On Ginger

This experiment was carried out at the experimental station of Shandong Agricultural University from June 2005 to October 2006. The forming rule of yield and quality of different humic acid fertilizers on ginger and the effect of ginger specific humic acid fertilizer on the soil environment have been studied in pondlet culture. The main results were as follows:1 Biological Effects of Humic acid urea fertilizer on gingerComparing with non-fertilizer treatment, the yield of HA treatment, urea treatment and mixed HA and urea fertilizer treatment and Humic acid urea fertilizer treatment respectively increased yield by 22.15%, 63.00%, 66.72% and 82.61%. Comparing with the other treatment, Humic acid urea fertilizer significantly increased starch content, soluble sugar content, protein content, amino acid content, pungent compounds content, fibrin content, but reduced NO3- content.Comparing with urea treatment, Humic acid + urea treatment and Humic acid urea treatment significantly increased the growth of leaf, HR active, chlorophyll content, photosynthesis. Humic acid + urea treatment and Humic acid urea treatment increased the root system activity, maintained high absorb system and satisfied the absorbing of water and nutrient of ginger. Humic acid + urea treatment and Humic acid urea treatment increased the SOD content,POD content,CAT content , soluble protein content and reduced MDA content in root. Humic acid + urea treatment and Humic acid urea treatment increased the antioxidant of cell membrane, resistance of stress and aging period was delayed. Humic acid + urea treatment and Humic acid urea treatment significantly increased the plant height, stem diameter, branch number, leaf number per plant and make ginger for biggish oxysporum.The treatment of Humic acid urea is better than Humic acid + urea.2 Biological Effects of potassium humate fertilizer on gingerComparing with non-fertilizer treatment, the yield of sulphate-potassium treatment, Humic acid + sulphate-potassium treatment and potassium humate fertilizer treatment respectively increased yield by 8.88%,46.73%,51.64%,61.29%. Comparing with the other treatment, potassium humate fertilizer significantly increased soluble sugar content, pungent compounds content, fibrin content, but reduced starch content protein content, amino acid content, and NO3- content.Comparing with sulphate-potassium treatment, Humic acid + sulphate-potassium treatment and potassium humate treatment significantly increased HR active, chlorophyll content, photosynthesis, accelerated the growth of leaf, increase the root system activity and kept the root high phyosiological activity. Humic acid + sulphate-potassium treatment and potassium humate treatment increased SOD content,POD content,CAT content, soluble protein content and reduced MDA content. Humic acid + sulphate-potassium treatment and potassium humate reatment increased the antioxidant of cell membrane, resistance of stress and aging period was delayed. Humic acid + sulphate-potassium treatment and potassium humate reatment significantly the plant height, stem diameter, branch number, leaf number per plant and make ginger for biggish oxysporum. The treatment of potassium humate better than Humic acid + sulphate-potassium.3 Effects of ginger specific humic acid fertilizer on the forming of yield & quality and rhizosphereGinger specific humic acid fertilizer significantly increased the plant height, branch number, leaf number per plant and make ginger for biggish oxysporum.Ginger specific humic acid fertilizer increased HR active, chlorophyll content, photosynthesis and accelerated the growth of leaf. Ginger specific humic acid fertilizer increased the absorption amount of Nitrogen, Phosphorus, Potassium.Ginger specific humic acid fertilizer increased the soil organic matter content, total nitrogen content, available nitrogen content, available phosphorus content. Ginger specific humic acid fertilizer increased active microbial biomass, soil,s respiration and soil,s carbon.Ginger specific humic acid fertilizer obviously increased the urease activity, invertase activity and acid phosphatase activity.Ginger specific humic acid fertilizer significantly increased the yield. Comparing with non-fertilizer treatment, the yield of HA treatment, the equal abio-nutrient treatment and the ginger specific humic acid fertilizer treatment respectively increased yield by 24.34 %,69.10 %,89.35%.Ginger specific humic acid fertilizer significantly increased soluble sugar content, pungent compounds content, but reduced starch content protein content and fibrin content.