共查询到20条相似文献，搜索用时 109 毫秒
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草履虫是一种单细胞动物,是高等院校生物系及中学生物学实验教学中常用的实验材料。关于草履虫的纯培养,目前通常采用稻草培养液,用稻草培养草履虫效果好,成本低。但对于非产稻区而言,则不易取材。作者通过试验发现用莴苣、油菜、大白菜、菠菜、小麦粒、大米粒均可以培养草履虫,这些材料一般各地都有,可以买到,而且价钱不高,非常适合用作草履虫培养材料。 相似文献
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韦玉芳 《南宁职业技术学院学报》2002,7(3):59-61
文章研究了以稻草、玉米杆、甘蔗渣等为主要原料生产发酵饲料的生产工艺、操作要点和产品质量标准。生产的饲料 ,质量稳定 ,动物适口性强 ,营养丰富 ,而且易被动物吸收利用 ,是一种物美价廉 ,操作过程易于掌握的动物性饲料。 相似文献
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马铃薯是一种经济价值较高的高产作物,既可作蔬菜,又可作粮食、饲料,同时也是一种重要的化工原料。农村中的稻草有很大一部分直接烧掉,冬闲的田又是一片一片的,如何利用冬闲田和稻草种植马铃薯而又尽量减少工时和成本呢?去年我校科技小组15名学生进行了一次稻草全程覆盖种植马铃薯的试验。 一、材料和方法 1.东农303种薯20公斤,猪栏肥100公斤,山东 相似文献
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俸付兰 《课程教材教学研究(小教研究)》2006,(1)
边疆地区的幼儿园应结合地方特点,充分利用民族资源,让幼儿接触、感知和欣赏地方民族特色,培养孩子对民族文化的热爱之情,培养幼儿的动手能力,发展幼儿的创造性精神。一、选择具有地方民族特色的游戏材料1.选择乡土气息浓的自然物品。如选择蝴蝶做标本;采集野花、野草做粘贴画;采集最具有地方特色的芭蕉叶,制作幼儿衣服、裙子、头饰、首饰等,制作各种玩具手枪、手机、大炮和各种动物等。在秋天收获时,利用当地特有稻草制作稻草人、稻草房、稻草椅子;用稻草编头发辫;用小麦的杆做装饰材料等。2.利用废旧材料。购买的玩具和游戏材料固然新颖好… 相似文献
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本试验比较了利用黄豆杆、高黄豆杆低稻草、低黄豆杆高稻草和稻草四种处理栽培平菇, 结果表明: 四种处理栽培平菇的生物转化率分别为70 %、7611 %、7712 %和8112 %。说 相似文献
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研究了木霉L-7利用稻草粉和玉米秸秆粉作为发酵基质进行的固态发酵;探讨了稻草粉和玉米秸秆粉的比例、碳源和氮源的种类、培养基含水量、培养基初始pH值、发酵温度、发酵时间及通气量对其产纤维素酶的影响。结果表明：最佳发酵培养基配方为稻草粉54.0g,玉米秸秆粉27.0g,麸皮19.0g,葡萄糖1.0g,硫酸铵1.0g,磷酸二氢钾0.1g,培养基含水量为1∶3;最优化培养条件为培养基初始pH值6.0,发酵温度30℃,发酵时间6天,通气量为60g/1000mL。在以上条件下,纤维素酶活达到最高。 相似文献
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鸡腿菇是世界卫生组织（WHO）和联合国粮农组织（FAO）公认的集“天然,营养,保健”三种功能为一体的珍稀菌种。试验主要固体配方选用了肥西地区普遍种植的、就地取材的稻草秸秆,作为鸡腿菇的培养料。以菌丝生长量为指标,以期筛选出适宜肥西地区栽培的秸秆固体培养配方和培养条件,以不加稻草秸秆的培养料配方为对照（CK）,再设置4个处理Ⅰ、Ⅱ、Ⅲ、Ⅳ,分别加入稻草秸秆培养料90％、80％、70％、60％,同时每个处理设3个重复。稻草秸秆固体配方的比例不同对鸡腿菇的生长发育,子实体外观形态,生物学效率以及经济效率有着显著地影响。从而筛选出肥西地区鸡腿菇生长的最优稻草秸秆固体培养料配方。 相似文献
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密度对稻秸秆纤维板物理性能的影响 总被引：1，自引：0，他引：1
密度与稻秸秆板的物理力学性能密切相关。研究表明,合理的剖面密度和平面密度分布对稻秸秆板的弹性模量、静曲强度、内结合强度、翘曲度等物理指标有积极的影响。在不同工艺条件和使用要求下,稻秸秆板的最佳密度点能够在相关正负效应间找到平衡点,进一步提升稻秸秆板在家具产业中的利用空间。 相似文献
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为了探索新的稻草利用途径,开发一种基于稻草的环保复合材料,对羧甲基纤维素与稻草的热压复合进行了研究。将稻草进行短切,以水为混合及复合助剂,先使羧甲基纤维素与稻草在常温常压下进行混合,然后在热压机上进行加热加压复合。研究了羧甲基纤维素用量、热压温度、热压时间对复合材料拉伸力学性能及硬度的影响。结果表明,复合材料的拉伸强度随羧甲基纤维素的用量的增加而增加,随热压时间及热压温度的增加先增加后减小,在羧甲基纤维素用量50%,热压温度120℃,热压时间10 min时,复合材料的拉伸强度为1.52 MPa。复合材料的硬度受加工条件的影响较小。 相似文献
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Xuan HAN Cheng-feng LIANG Ting-qiang LI Kai WANG Hua-gang HUANG Xiao-e YANG 《Journal of Zhejiang University. Science. B》2013,14(7):640-649
The simultaneous sorption behavior and characteristics of cadmium (Cd) and sulfamethoxazole (SMX) on rice straw biochar were investigated. Isotherms of Cd and SMX were well modeled by the Langmuir equation (R2 >0.95). The calculated maximum adsorption parameter (Q) of Cd was similar in single and binary systems (34129.69 and 35919.54 mg/kg, respectively). However, the Q of SMX in a binary system (9182.74 mg/kg) was much higher than that in a single system (1827.82 mg/kg). The presence of Cd significantly promoted the sorption of SMX on rice straw biochar. When the pH ranged from 3 to 7.5, the sorption of Cd had the characteristics of a parabola pattern with maximum adsorption at pH 5, while the adsorption quantity of SMX decreased with increasing pH, with maximum adsorption at pH 3. The amount of SMX adsorbed on biochar was positively correlated with the surface area of the biochar, and the maximum adsorption occurred with d 250 biochar (biochar with a diameter of 150-250 μm). Scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) showed that the removal of Cd and SMX by rice straw biochar may be attributed to precipitation and the formation of surface complexes between Cd or SMX and carboxyl or hydroxyl groups. The results of this study indicate that rice straw biochar has the potential for simultaneous removal of Cd and SMX from co-contaminated water. 相似文献
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Pleurotus sajor-caju (Fr.) Singer was cultivated on selected agro wastes viz. cotton stalks, groundnut haulms, soybean straw, pigeon pea stalks and leaves and wheat straw, alone or in combinations. Cotton stalks, pigeon pea stalks and wheat straw alone or in combination were found to be more suitable than groundnut haulms and soybean straw for the cultivation. Organic supplements such as groundnut oilseed cake, gram powder and rice bran not only affected growth parameters but also increased yields. Thus bioconversion of lignocellulosic biomass by P. sajor-caju offers a promising way to convert low quality biomass into an improved human food. 相似文献
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稻草粉栽培金福菇试验 总被引：4，自引：0，他引：4
以稻草粉为主料,设5种处理对金福菇的栽培培养基进行筛选,从而选出比较适合金福菇栽培的培养基.试验表明:用稻草粉做金福菇栽培培养基的主料是可行的.以处理A和C长势最好,处理A生物学效率最高,高达107%以上. 相似文献
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稻草栽培平菇高产品种的筛选 总被引：1，自引：0，他引：1
刘招龙 《宁德师专学报(自然科学版)》2000,(1)
选用 4个不同平菇品种 ,以稻草为原料做出菇对比试验 ,以筛选出高产的平菇品种 相似文献
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绿色纤维餐具的生产工艺技术 总被引：1，自引：0，他引：1
利用稻草、麦秆等一年生草本植物制成的绿色纤维餐具是塑料制品的理想替代品,可有效制止“白色污染”。本工艺采用了独特的氨化、干法热压（公称压力２００ＫＮ,上下模温１００℃,９０℃,时间１０秒）和二次涂膜技术。 相似文献
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Xie JK Kong XL Chen J Hu BL Wen P Zhuang JY Bao JS 《Journal of Zhejiang University. Science. B》2011,12(7):518-526
Rice straw is always regarded as a by-product of rice production, but it could be a significant energy source for ruminant
animals. Knowledge of the genetic variation and genetic architecture of cell wall traits will facilitate rice breeders by
improving relevant traits through selective breeding and genetic engineering. The common wild rice, Oryza rufipogon Griff., which is considered to be the progenitor of Oryza sativa, has been widely utilized for the identification of genes of agronomic importance for rice genetic improvement. In the present
study, the mapping of quantitative trait loci (QTLs) for acid detergent fiber (ADF), neutral detergent fiber (NDF), acid detergent
lignin (ADL), and ADL/NDF ratio was carried out in two environments using a backcrossed inbred line (BIL) population derived
from a cross between the recurrent parent Xieqingzao B (XB) and an accession of Dongxiang wild rice (DWR). The results indicated
that all four traits tested were continuously distributed among the BILs, but many BILs showed transgressive segregation.
A total of 16 QTLs were identified for the four traits, but no QTLs were in common in two environments, suggesting that environment
has dramatic effects on fiber and lignin syntheses. Compared to the QTL positions for grain yield-related traits, there were
no unfavorable correlations between grain yield components and cell wall traits in this population. The QTLs identified in
this study are useful for the development of dual-purpose rice varieties that are high in grain yield and are also high in
straw quality. 相似文献