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Eryngii is a famous edible and medicinal fungi, currently Pleurotus good market prospects, the rare mushroom factory cultivated concern both at home and abroad. Pleurotus cultivation research has been extensive. The domestic research focuses on scientific ratio, a wide choice of raw materials, but very little study of the physical and chemical properties of the culture substrate eryngii culture substrate. Eryngii yield impact of culture dishes traits change the contents of the urgent need for in-depth study, can find out the impact of the law, both applied to the actual factory production, bound culture material savings and apricot abalone The mushroom yield improvement important guiding role. In this study, by the raw materials used in the factory cultivation eryngii sawdust, corn cob, cotton seed hulls, wheat bran, rice bran, corn flour, soybean meal study of the physical and chemical properties, explore the culture medium suitable for the eryngii factory cultivation lay the theoretical foundation for the design of the factory eryngii cultivation recipe. The main findings are as follows: 1, suitable factory cultivated carbon sources, corncob water holding capacity was significantly higher than that of wood chips holding capacity of 2.95; minimum cotton seed hulls holding capacity was 2.19. Four nitrogen sources bran, rice bran, corn meal and soybean meal, wheat bran holding capacity is significantly higher than the other three nitrogen sources was 3.03; corn flour water holding capacity of the smallest, only 0.97. Therefore, the factory cultivation eryngii recipe can be appropriately increased corn cob and bran usage, to improve water retention training material. Different particle size corn cob water holding capacity test results show that the X2 (5 to 10 mesh (4mm)) particle size corn cob water holding capacity of the strongest 3.01. As the eryngii factory cultivation with most carbon sources, sawdust completely imbibed raw materials; corncob compressed and non-compressed the maximum absorption of the corn cob expansion force different, respectively, 1.62 and 1.35; cotton hulls imbibed force is only 1.14. Rice bran and corn flour is completely imbibed raw materials. Bran absorbing capability, the maximum the imbibed force 1.03. All testing of raw materials, soybean meal imbibed greatest force for 1.75. 2 single corncob particle size formulations mycelial growth rate gradually decreases with corncob particle size reduction, the eryngii yields gradually decreased biology efficiency also decreases, the particles are too small to lead to longer growth cycle; grained corn cob mix recipe, mycelial growth rate gradually increased with the increase in the content of the large particles corncob, a gradual increase in production, increase in biological efficiency , no difference in the growth cycle. Corncob particle size uniform design formulations, 11 formulations formulations yield as well as the highest biological efficiency. As can be seen through analysis, in the case of a certain total amount of the corn cob, recipe 2,5,7,8,10 have a relatively small number of small particles corncob, and the yields are relatively high. Therefore, excessively added, corn cob, small particle size eryngii yield negatively affected. 3, the nitrogen content of the main line, the first single nitrogen source recipe test filter out the best suitable eryngii growth nitrogen content, single nitrogen optimum formulation of experimental the best nitrogen content optimization, and finally by the nitrogen source The composite formulations trial, filter out the best when the nitrogen content of the best recipe. The experimental results show that the single nitrogen source recipe test, when the bran add 30% formulations nitrogen content of 0.7933%, the amount of rice bran add Recipe nitrogen content of 40% 0.8146% 0.8036% Recipe nitrogen content of 50% the amount of corn flour add recipe yields maximum three groups, respectively. Single nitrogen source optimization formulations test to verify the above results. Formulations nitrogen content of 0.80% to 0.81% design nitrogen source composite recipes, recipe 6: Sawdust 29%, 29% of the corn cob, wheat bran 16%, 25% of the corn flour, lime 1% can achieve the maximum yield of 152.70 g and good commodity traits. 4, rice bran rancidity value increased with storage time. Rice bran storage time within 30 days of the eryngii growth and yield almost no effect, and with the extension of storage time, the rice bran rancidity value increases, the the eryngii growth cycle extend significantly lower yield. When rice bran rancidity value reached 118.11 mgKOH / g oil, mushroom growth cycle was extended by two days, production decreased by approximately 35%. When rice bran rancidity value reached 152.39 mgKOH / g oil control formula growth cycle was extended by two days, a decrease of approximately 26% yield; rice bran formulations extend the growth cycle of four days, a 68% reduction in production. In this paper, the factory cultivation eryngii culture dishes of the nature of the system, the measurement and analysis of different raw materials holding capacity, imbibed rate, and provide a theoretical basis for the formulation of scientific ratio. Eryngii growth and yield of different particle size corn cob, mainly nitrogen content line screening eryngii grown nitrogen content and derived the best nitrogen content when the best recipe and rice bran rancidity of with eryngii growth and yield, to provide theoretical guidance for the factory eryngii production.
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