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mildew grew
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     summarize the causation of mildew;
     概述霉变产生的原因;
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     the constitutes of the mildew toxins;
     霉菌毒素的构成及其对水产动物的危害;
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     Results:Fractures grew normally.
     结果 :骨折均满意愈合 ;
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     V. grew more vigorously than P.P.
     V.在板材表面生长较旺盛,造成的强度损失程度类似,且都大于P.
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Restricting factors of bacteria growth were studied by pure culture and natural culture test. The results showed that organic carbon source available for bacteria was more important than (NH 4) 2SO 4 and KH 2PO 4, while higher pH, and rich biomass of phytoplanktons and zooplanktons in the water restrained the growth of heterotrophic bacteria. Under natural culture experiment, Azotobacter increased after 0.5% glucose was added, and a lot of mildew grew after adding 0.5% glucose with 0.1%(NH 4)...

Restricting factors of bacteria growth were studied by pure culture and natural culture test. The results showed that organic carbon source available for bacteria was more important than (NH 4) 2SO 4 and KH 2PO 4, while higher pH, and rich biomass of phytoplanktons and zooplanktons in the water restrained the growth of heterotrophic bacteria. Under natural culture experiment, Azotobacter increased after 0.5% glucose was added, and a lot of mildew grew after adding 0.5% glucose with 0.1%(NH 4) 2SO 4 and 0.1% KH 2PO 4, while Pseudomonas enriched 30~57% after adding 0.01% beef extract. It was also showed that bacteria growth potentiality in natural water could reach to 10 5 cfu·ml -1 .

通过添加不同营养盐类的纯种和自然培养试验 ,对异养细菌生长的限制因子进行了研究 .结果表明 ,生物可利用的有机碳是主要的限制性营养因子 ,而氮源和磷源的影响相对较小 ;湖水的高 pH、丰富的藻类和浮游动物生物量也制约了异养细菌的生长 .此外还发现 ,在自然水体中添加 0 .5 %葡萄糖后 ,一些自生固氮细菌得到富集 ;添加C +N +P后 ,有大量霉菌生长 ,添加 0 .0 1 %牛肉膏后 ,假单胞菌属 (Pseu domonas)细菌由原来的 30 %提高到 57% ;湖水进行实验室培养时细菌的最大生长量可达 1 0 5个·ml- 1 .

Research on the greenhouse tomatoes'grey mildew developing regularity and its pathogen biologic characteristics in LinZhi prefecture showed that there are three spreading periods of tomatoes'grey mildew in sunlight greenhouse: sprouting period (from early March to the first ten days of April);developing period(from the first ten days of April to the last ten days April); fastigium period (from the first ten days of April to the last ten days May).During the developing period, tomatoes'grey mildew...

Research on the greenhouse tomatoes'grey mildew developing regularity and its pathogen biologic characteristics in LinZhi prefecture showed that there are three spreading periods of tomatoes'grey mildew in sunlight greenhouse: sprouting period (from early March to the first ten days of April);developing period(from the first ten days of April to the last ten days April); fastigium period (from the first ten days of April to the last ten days May).During the developing period, tomatoes'grey mildew grows from the bottom leaves to the upper leaves, bottom fruit to upper fruit. Pathogen could grow under 5~30℃, but it is more suitable to grow in soft light between 15℃to 25℃(the best temperature is 20℃), and the relative humidity is RH≥80%, pH4.0~7.0. Fruit sugar is the best carbon source to the growth of hypha. Spore grows fastest in glucose solution. Lucid asparagus imide is the best nitrogen source to the growth of hypha and spore.there will be no spore if lack of nitrogen.

通过对林芝地区番茄灰霉病的调查及病原菌生物学特性研究,结果表明:番茄灰霉病在林芝地区日光温室中流行可分为3个时期,3月初至4月上旬为始发期,4月上旬至4月下旬为上升期,并表现出由下部叶向上部叶、由下层果向上层果发展的趋势,4月下旬至5月下旬为该病的发生高峰期;病原菌在5~30℃均能生长,适宜温度为15~25℃,最佳温度为20℃、相对湿度RH≥80%、pH4.0~7.0、弱光环境下适宜病原菌生长;碳源以果糖对菌丝生长最佳,产孢以葡萄糖溶液中最快,氮源以天门冬酰胺对菌丝生长和产孢最佳,缺氮不产孢。

 
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