NOVELTY - Production of crop straw field organic fertilizer comprises harvesting crop straw during harvest season while still in fields; crushing crop straw into 0.1-5.0 cm length; adding 15-100 mass% manure; taking 1000 kg crop straw and adding with 1-10 kg urea or 2-20 kg ammonium sulfate and 0.1-1 kg quicklime; uniformly applying mixture on soil surface; adding 1000 g crop straw with microbial agents; replowing soil; irrigating farmland to completely wet farmland soil surface; and adding straw in field through soil into organic biocatalysis fertilizer.    USE - Production of crop straw field organic fertilizer used for cultivating wheat, canola, rice, corn, soybean and peanut crops (claimed).    ADVANTAGE - The method solves air pollution caused by combusting crop straws and problem that organic matters of farmland soil are reduced. It improves soil fertility and promotes development of ecological agriculture. It is simple and feasible, saves one-time huge investment of commercial production, saves energy and reduces emission, reduces labor intensity, and solves problems of long-distance transportation and secondary pollution.    DETAILED DESCRIPTION - Production of crop straw field organic fertilizer comprises harvesting crop straw during harvest season while still in fields; crushing crop straw into 0.1-5.0 cm length; adding 15-100 mass% manure; taking 1000 kg crop straw and adding with 1-10 kg urea or 2-20 kg ammonium sulfate and 0.1-1 kg quicklime; uniformly applying mixture on soil surface; adding 1000 g crop straw with microbial agents consisting of 100-1000 one hundred million live bacteria or spores of Trichoderma, 100-1000 one hundred million live bacteria or spores of Penicillium, 100-1000 one hundred million live bacteria or spores of Aspergillus, 10-100 one hundred million live bacteria or spores of Actinomycetes, 100-500 one hundred million live bacteria or spores of Pleurotus, 100-1000 one hundred million live bacteria or spores of Streptomyces, 100-1000 one hundred million live bacteria or spores of Arthrobacter, 100-1000 one hundred million live bacteria or spores of Pseudomonas aeromonas, and 100-1000 one hundred million live bacteria or spores of Xanthomonas; plowing soil again to make all kinds of material mix and flat farmland plowed surface; irrigating farmland to completely wet farmland soil surface; keeping soil moisture at 40-60 wt.% for 12-15 days on summer and 20-22 days on autumn; adding straw in field through soil into organic biocatalysis fertilizer; and plowing soil before planting crops.