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分别以6个水稻品种为试验材料,进行了聚-γ-谷氨酸(γ-PGA)及其增效肥试验。结果表明,100mg/L和200mg/L的γ-PGA浸种和田间喷施,使扬两优6号和珍珠糯秧苗长势旺,白根数增加,分蘖数增多,有效穗数增加,200mg/L的γ-PGA浸种和田间喷施比100mg/L的γ-PGA处理的每公顷产量分别提高465kg和555kg,增6.9%和8.4%,且两处理产量均显著高于对照;当使用600kg/hm2和480kg/hm2的γ-PGA增效复合肥时,杂交中稻Ⅱ优416的产量比使用同样重量的复合肥每公顷产量增加427.5～517.5kg,增幅为4.5%～5.3%,表现出节肥效果;在培两优3076上进行的增效尿素试验表明,秧苗栽移后5d每公顷施γ-PGA增效尿素90kg,剑叶露尖时每公顷施γ-PGA增效尿素45kg的产量最高,与对照呈显著差异;当基肥为480kg/hm2γ-PGA增效复合肥与γ-PGA增效尿素配合使用,其产量比基肥为600kg/hm2普通复合肥和普通尿素配合使用的对照要高,表现出明显的节肥效果。
Six rice cultivars were used as materials to test poly-γ-glutamic acid (γ-PGA) and its synergistic effect. The results showed that soaking seeds with 100mg / L and 200mg / L γ-PGA and field spraying resulted in the growth of waxy rice seedlings of Yangliangyou 6 and pearl, the number of white roots increased, the number of tillers increased, the number of effective panicles increased, The yield per hectare increased by 465kg and 555kg, increased by 6.9% and 8.4% respectively when treated with γ-PGA and 100μg / L γ-PGA soaking treatment. The yield of both treatments was significantly higher than that of the control. When 600kg / hm2 and 480kg / hm2 γ-PGA compound fertilizer, the yield of hybrid mid-hybrid rice Ⅱ You 416 was 427.5-517.5kg, an increase of 4.5% -5.3% compared with the same weight of compound fertilizer, showing the effect of fertilizer saving; The test of synergistic urea on Peiliangyou 3076 showed that the yield of γ-PGA synergistic urea was 90kg per hectare and the yield of 45kg γ-PGA synergistic urea per hectare was the highest at 5 days after transplanting, When the basal fertilizer was 480kg / hm2γ-PGA synergistic compound fertilizer with γ-PGA synergistic urea, its yield was higher than that of the control with 600kg / hm2 common compound fertilizer and common urea with basal fertilizer Obvious fattening effect.