生物有机肥改良连作土壤及烤烟生长发育的效应

以蚯蚓肥和有效微生物制剂堆置发酵制成生物有机肥,采用盆栽试验研究了生物有机肥和化肥按不同配比混合施用后对烤烟生长发育及植烟土壤理化性质的影响。结果表明,施肥显著促进烤烟的生长发育,以生物有机肥比例为50%时最佳,70%次之,同时生物有机肥比例为50%时烤烟产量最高;纯生物有机肥施用后烤烟的生长指标和产量均优于纯化肥处理;生物有机肥比例为30%～50%时可以促进烤烟对氮素、钾素的吸收,更有利于优质烟叶的生产;施用生物有机肥可显著提高连作土壤的pH值、有机质含量和碱解氮、速效磷及速效钾的含量。

Effects of bio-organic fertilizer's application on flue-cured tobacco planted on continuous cropping soil

The effects of compost mixed with earthworm fertilizer and effective microorganism on continuous cropping soil was studied.It discussed the effects of bio-organic fertilizer and chemical fertilizer’s mixing application by different ratios on flue-cured planting and the soil chemical properties with pot experiment.The result indicated that:the fertilization significantly promoted the growth of flue-cured tobacco,the best proportion of bio-organic fertilizer was fifty percent,followed by seventy percent,while the yield of flue-cured tobacco was the highest when the proportion was fifty percent,the growth and yield of flue-cured tobacco of pure bio-organic fertilizer treatment was better than pure fertilizer treatment,the bio-organic fertilizer could promote the nitrogen and potassium absorption when the proportion was between thirty percent and fifty percent,and was more propitious to the production of high quality tobacco,the application of organic fertilizer could significantly increase the cropping soil′s pH,organic matter content and available nitrogen,phosphorus and potassium content.