In order to find a more efficient, economical, and environmentally friendly chemical fertilizer alternative, we have developed a new type of microbial fertilizer. The reported types of functional microorganisms in biofertilizers are mostly single and concentrated in nitrogen-fixing bacteria and phosphate-solubilizing bacteria. Here we evaluate the effect of the compound microbial fertilizer with several kinds of functional bacteria. A field experiment was conducted with five treatments (no-fertilization control, regular fertilization 600 kg ha−1, compound microbial fertilizer 750 kg ha−1, compound microbial fertilizer 900 kg ha−1, compound microbial fertilizer 1050 kg ha−1). The effects of the compound microbial fertilizer on wheat traits, grain yield, soil physical and chemical properties, and microbial community structure were investigated. The results showed that the compound microbial fertilizer as base fertilizer could not only enhance the contents of soil available phosphorus and available potassium but also enhance the grain yield markedly. The compound microbial fertilizer could affect the microbial community, and the change of the microbial community was more correlated with growth period of wheat. The results established that the compound microbial fertilizer which can reduce part of the amount of chemical fertilizer can enhance wheat yield and the recommended dose of the fertilizer is 750 kg ha−1 in the study area.

中文翻译：

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复合微生物肥对小麦（Triticum aestivum L.）土壤特性及产量的影响

为了寻找更高效、更经济、更环保的化肥替代品，我们开发了新型微生物肥料。已报道的生物肥料中的功能微生物种类多为单一的，集中在固氮菌和溶磷菌中。在这里，我们评估了复合微生物肥料与几种功能菌的效果。田间试验分5个处理（不施肥对照，常规施肥600 kg ha-1，复合微生物肥750 kg ha-1，复合微生物肥900 kg ha-1，复合微生物肥1050 kg ha-1）。研究了复合微生物肥对小麦性状、籽粒产量、土壤理化性质和微生物群落结构的影响。结果表明，复合微生物肥作为基肥，不仅能提高土壤速效磷、速效钾含量，而且能显着提高粮食产量。复合微生物肥对微生物群落有影响，微生物群落的变化与小麦生育期的相关性更大。结果表明，可减少部分化肥用量的复合微生物肥可提高小麦产量，研究区推荐施肥量为750 kg ha-1。复合微生物肥对微生物群落有影响，微生物群落的变化与小麦生育期的相关性更大。结果表明，可减少部分化肥用量的复合微生物肥可提高小麦产量，研究区推荐施肥量为750 kg ha-1。复合微生物肥对微生物群落有影响，微生物群落的变化与小麦生育期的相关性更大。结果表明，可减少部分化肥用量的复合微生物肥可提高小麦产量，研究区推荐施肥量为750 kg ha-1。