浙江山茶花病虫害防治初探——以景山茶花专类园为例     

李纯莉 《中国园艺文摘》2014,(11):153-154

温州景山公园茶花园内茶花丰富，茶花开放时间从1 1月左右陆续开放至来年5月，花期时间长、花色艳丽、花型丰富。通过对温州景山茶花园茶花病虫害进行记录，结合防治，提高茶花开花期品质和赏花品质。  相似文献   

微生物发酵在菜籽饼粕饲用品质改良中的应用研究进展     

王萌  奚钊  万楚筠  陈文超  万霞  黄凤洪 《中国油料作物学报》2020,42(2):313-324

随着畜牧业的快速发展、优质饲料原料的严重不足以及国际进口贸易形势的日益紧张,开发非常规饲料资源的需求愈发迫切。菜籽饼粕是我国第一大油料作物油菜的加工副产物,饲用价值不高严重制约了在饲料工业中的应用。微生物发酵技术具有改良菜籽饼粕品质和提高畜禽生产性能的优势。本文综述了微生物发酵改良菜籽饼粕饲用价值的机理、影响因素以及微生物发酵菜籽饼粕饲料在畜禽生产中的应用,讨论了目前微生物发酵菜籽饼粕生产中存在的问题,展望了未来微生物发酵菜籽饼粕饲料的发展方向。  相似文献   

油茶有效传粉蜂种研究进展     

胡景华  刘锋  秦加敏 《蜜蜂杂志》2019,(3):27-30

油茶(Camellia oleifera)属异花虫媒授粉树种,是我国重要的油料植物。油茶的结实率相当大程度上依赖于传粉昆虫,其中传粉效率较高的大分舌蜂、油茶地蜂等膜翅目昆虫是主要的有效传粉昆虫。综述了几种油茶有效传粉蜂的生物学特性、传粉特性以及引放技术,并展望今后油茶授粉研究方向及重点。  相似文献   

Influence of storage time and processing on chemical composition and in vitro ruminal fermentation of olive cake     

Carlos N. Marcos  Trinidad de Evan  Paloma García‐Rebollar  Carlos de Blas  Maria Dolores Carro 《Journal of animal physiology and animal nutrition》2019,103(5):1303-1312

Olive oil extraction generates olive cake (OC) that could be used in ruminant feeding. However, the chemical composition of OC is affected by multiple factors, being therefore highly variable. The objective of this study was to analyse the influence of storage time and further processing: crude, exhausted (subjected to a second oil extraction) and cyclone (obtained from a cyclone separator) on nutritive value of OC samples. Twelve samples (six crude and six exhausted) were obtained monthly from the same pond from 1 to 6 storage months, and nine samples (three crude, three exhausted and three cyclone) were obtained monthly from a different pond from 6 to 9 months storage. Chemical composition was analysed, and OC samples were fermented in vitro with sheep rumen fluid. Increasing storage time up to 6 months decreased sugars and total soluble polyphenols content but increased fibre content in OC. Dry matter effective degradability (DMED) decreased linearly (p < 0.001) by 35.9 and 45.5% as storage time augmented from 1 to 6 months for crude and exhausted OC, respectively. Crude OC had lower DMED values than exhausted OC (averaged values 0.255 and 0.294 g/g, respectively). Both potential production and rate of gas production were lower (p ≤ 0.018) in crude compared with exhausted OC, which was attributed to the high fat content of crude OC (≥86 g/kg dry matter). For samples stored longer than 6 months, cyclone had greater (p < 0.05) DMED than crude and exhausted OC (averaged values 0.207, 0.164 and 0.164 g/g, respectively). The results indicate that ruminal degradability of OC is reduced with advancing storage time, but only subtle changes were observed during the first two months. Cyclone showed greater degradability than crude and exhausted OC, but differences between crude and exhausted OC became negligible after five storage months.  相似文献   

桐籽饼去毒作饲料的研究   总被引：2，自引：0，他引：2  

胥泽道  冉琼珍 《粮食储藏》1998,27(1):44-53

文章报导了将经去毒处理的桐饼粉,按不同比例添加于饲料中喂养肉鸡、蛋鸡、生长肥育猪,经筛选、小试、中试等规模试验的情况。结果表明：我国现行榨油工艺的机榨桐饼,经去毒处理后,可按10％比例加入肉鸡饲料,按5％比例加入蛋鸡饲料。按5％～7．5％加入肥育猪饲料中;各项生产性能及病理变化均与对照无明显差异．有的还优于对照,文章报导的去毒方法,较发酵法和化学处理法操作工艺简单,成本低,效果好．  相似文献   

Processing of maize germ oil cake into edible food grade meal and evaluation of its protein quality     

Gupta  H. O.  Eggum  B. O. 《Plant foods for human nutrition (Dordrecht, Netherlands)》1998,52(1):1-8

The commercial oil cake produced during expeller pressing of maize germ, was extracted with n-hexane and 80 percent ethanol followed by seiving to remove undesirable materials. In defatted maize germ oil cake (DMGOC): protein, starch, fat, crude fiber (CF) and ash were respectively 24.69, 36.55, 5.68, 7.56 and 3.90 percent and they decrease after processing except ash, which increased slightly. It contains better quality protein having only 3 percent zein and 47 percent albumin. Its amino acids like lysine and tryptophan and biological value (BV) were higher than that of whole maize grain, and was comparable with that of the amino acid requirement of preschool children and casein diets both. Its digestible energy (DE) was lower compared with whole maize grain as well as the casein diets. After processing albumin, globulin and zein decreased whereas glutelin and the residual fraction increased. Not much differences were observed in chemical composition and different amino acids, in vitro protein digestibility (IVPD), true digestibility (TD), BV and DE improved after processing.  相似文献   

春梢生育期间茶树越冬叶生理机能的变化     

罗军武  唐和平  黄意欢  沈程文  龚志华 《湖南农业大学学报(自然科学版)》1999,25(6):461-463

以东湖早、槠叶茶、福鼎大白３个品种为材料,以自由基衰老学说为理论依据,对茶树越冬叶片在春梢生长期间的超氧化物歧化酶（ＳＯＤ）、过氧化氢酶（ＣＡＴ）、过氧化物酶（ＰＯＤ）活性以及叶绿素、可溶性蛋白质和可溶性糖含量等生理指标进行了测定,旨在探讨越冬叶在春梢生育期间生理机能的变化。试验结果表明：随着新梢的生长,越冬叶片的ＳＯＤ,ＣＡＴ,ＰＯＤ活性下降,叶绿素,可溶性蛋白质和可溶性糖降低,越冬叶片已明显的  相似文献   

茶树体细胞植株再生的光照效应   总被引：12，自引：1，他引：11  

刘德华  周带娣  熊格生  陈庆余  李敏  杨安元 《湖南农业大学学报(自然科学版)》1999,25(2):112-115

为了探寻光照对茶树体细胞植株再生的影响效果,以茶树全胚,具有子叶柄的子叶为材料,研究５００,１５００ｌｘ,黑暗３种光照条件对植株再生的影响。结果表明,胚状体主要发生在子叶柄了子叶片的隆起处,子叶片隆起发生率随光照度增加而降低,子叶发生隆起的子叶培养物在５００ｌｘ光照度下培养,子叶片的胚状体分化率较高,子叶柄的胚状体,不定芽分化随光照度下降而下降;连续在黑暗下培养,子叶片的畸形胚发生率高,且数量多。  相似文献   

Growth and economic analysis of freshwater prawn,Macrobrachium rosenbergii (de Man), produced with feeds substituting sunflower cake for fish meal,soya bean meal and mustard oil cake          下载免费PDF全文

Mohammad Mokarrom Hossain  Subhash Chandra Chakraborty 《Aquaculture Research》2017,48(10):5418-5429

A feeding trial with Macrobrachium rosenbergii was carried out to test the effectiveness of sunflower cake (SFC) as a replacement for conventional protein sources. Four isonitrogenous (~30% crude protein) and isocaloric (388–402 kcal) diets were formulated. Diet‐1 was a control made with conventional ingredients including fish meal, soya bean meal and mustard oil cake. Diet‐2, Diet‐3 and Diet‐4 were made with 30%, 40% and 50% SFC, respectively, replacing the usual protein sources used in Diet‐1. After 100 days, diets with SFC inclusion showed favourable growth and economic performance trends compared to control diet‐1, but without significant differences (p > .05). Better production (572.89 ± 62.99 kg/ha) was observed with Diet‐4 followed by Diet‐2, Diet‐3 and Diet‐1. Diet‐4 revealed the best feed conversion ratio (2.56 ± 0.24), specific growth rate (1.18 ± 0.05) and protein efficiency ratio (1.14 ± 0.10) among these diets. Whole carcass composition analysis revealed highest crude protein (18.19%) and lipid (4.43%) content in prawns fed Diet‐3 followed by Diet‐4. Highest total income, gross margin and benefit cost ratio (BCR) per hectare from prawns were US$5,759, US$2,623 and 1.84, respectively, found in Diet‐4. This study demonstrates that 30%–50% inclusion of SFC has favourable impacts on productivity and profitability compared with controls, with 50% SFC inclusion as the most cost‐effective diet for prawns without apparent compromise in growth, flesh quality or economics. The performances of the diets suggest that SFC may be a suitable substitute for fishmeal, soya bean meal and mustard oil cake in prawn feed. The effectiveness of higher SFC concentrations should also be investigated.  相似文献   

红枣枣泥蛋糕加工工艺研究     

金锋  王帅 《农业机械化与电气化》2010,(3):34-37

采用正交试验的方法,对红枣枣泥蛋糕的配方和生产工艺进行研究。试验结果表明：红枣枣泥蛋糕的最佳工艺参数为上火温度160℃、下火温度190℃、时间19min;最佳配方为枣泥150g、面粉350g、泡打粉8g、白砂糖180g、水150mL。  相似文献