The occurrence rules of major diseases and pests in rice were investigated under six cultivation patterns, i.e., mechanical plowing-artificial transplanting, mechanical plowing-mechanical transplanting, mechanical plo...The occurrence rules of major diseases and pests in rice were investigated under six cultivation patterns, i.e., mechanical plowing-artificial transplanting, mechanical plowing-mechanical transplanting, mechanical plowing-scattered transplanting,cattle plowing-artificial transplanting, cattle plowing-mechanical transplanting and cattle plowing-scattered transplanting. The results showed that the six cultivation patterns showed small effects on the occurrence of rice sheath blight, second-generation rice planthopper, rice stem borer and rice false smut, but showed great effects on the occurrence of rice leaf folder, third-and fourth-generation rice planthopper and weeds; there were certain differences in the rice yield among different cultivation patterns, and the rice yield under the pattern of mechanical plowing-mechanical transplanting ranked first, while that under the pattern of cattle plowing-scattered transplanting ranked last.展开更多
Sod culture in peach orchards is an advanced soil management. The significances of sod culture in peach orchard are introduced, as well as the sod ways. The effects of sod culture in a peach orchard on soil, microclim...Sod culture in peach orchards is an advanced soil management. The significances of sod culture in peach orchard are introduced, as well as the sod ways. The effects of sod culture in a peach orchard on soil, microclimate and growth and development of peach tree, and disease, pest and weed are reviewed. The problems in sod culture in peach orchard in China are summarized. Sod culture could increase soil fertility, improve soil physical properties, relieve soil temperature change, increase soil microbial growth and soil enzyme activity, improve microclimate and fruit quality, reduce physiological disease, insect pests and weeds.展开更多
[Objective] Study on the effects of rice-duck mutualism on weeds and insects pests and economic benefits of paddy field. [Method] Comparison of the incidence of weeds, sheath blight and insects pest under rice-duck mu...[Objective] Study on the effects of rice-duck mutualism on weeds and insects pests and economic benefits of paddy field. [Method] Comparison of the incidence of weeds, sheath blight and insects pest under rice-duck mutualism, conventional cultivation and control treatment, the yield and economic benefits were analyzed under the 3 treatments. [Result] Average occurrence of weeds in rice-duck mutualism group decreased by 2.33 and 52.0g ind/m^2 compared with that in conventional cultivation and control treatment ; the control rate of mutualism was up to 75% against rice hopper, but just between 25% -60% against rice leaf roller and Chilo suppressalis. The rates of diseased plant and diseased bell against rice sheath blight were higher and disease indices were lower compared with control group. The yield of mutualism group was identical with conventional cultivation, Which was greatly higher than that of control group. The results suggested an higher economic benefits and lower cost benefit ratio for rice-duck mutualism treatment. [Conclusion] Rice-duck mutualism gives birth to a positive effect to control the diseases, insect pests and weeds, as well as to economic benefits, providing basis on extension of rice-duck mutualism system.展开更多
Herbal pesticides refer to the active ingredients extracted from herbs which are used for pest and disease control in crops or pure substances isolated from them. They are of great significance for the production of p...Herbal pesticides refer to the active ingredients extracted from herbs which are used for pest and disease control in crops or pure substances isolated from them. They are of great significance for the production of pollution-free agricultural products, as well as for exploiting the abundant plant resources in China for the prevention and control of pests. In this paper, the advantages of herbal pesticides,such as being environment-friendly, diverse patterns of action, safety for higher animals and the natural enemies of pests and making it hard for pests to produce resistance were first stated; then, Chinese herbal medicine resources with antibacterial and insecticidal activities from 49 families and their functions were reviewed, and 19kinds of herbal pesticides that have been developed and applied in China and seven kinds that have been produced on a large scale were also introduced; finally,three issues deserving further exploration during the development and application of herbal pesticides were presented, that is, research in variety selection and cultivation of herbs, and methods for extraction of active ingredients; basic research in the structure identification of herbal active ingredients, and the relationship between plant variety and active ingredients; development of lead compounds based on herbal active ingredients.展开更多
Large and small doses of drugs for improving blood circulation and removing blood stasis were used in model rats to treat mild chronic hepatic damage induced by carbon tetrachloride (CCl4). The results show that large...Large and small doses of drugs for improving blood circulation and removing blood stasis were used in model rats to treat mild chronic hepatic damage induced by carbon tetrachloride (CCl4). The results show that large dose of Dang Gui ([symbol: see text] Radix Angelicae Sinensis) and Dan Shen ([symbol: see text] Radix Salviae Miltiorrhizae) (drugs for regulating blood flow) and small dose of Yu Jin ([symbol: see text] Radix Curcumae) and Niu Xi ([symbol: see text] Radix Achyranthis Bidentatae) (drugs for activating blood flow) can significantly elevate the activity of SOD (P展开更多
Processing cow manure into biogas is a solution to reduce air pollutant, because it reduces the smell of the manure up to 70%. Besides producing biogas, the sludge of biodigester can also serve as solid and liquid fer...Processing cow manure into biogas is a solution to reduce air pollutant, because it reduces the smell of the manure up to 70%. Besides producing biogas, the sludge of biodigester can also serve as solid and liquid fertilizer. The solid fertilizer can be used as carder of entomopathogenic fungi to control the pest which lives underground. The research aimed to investigate the benefits of biodigester sludge as fertilizer and carrier of entomopathogenic fungi （Cordyceps sp.） to control white grub pest. The use of organic fertilizer and pesticide in the cultivation can minimize the environmental hazard. The method used in the study was completely randomized design with four treatments, which were the addition of Cordyceps sp. corn media as much as 0, 10, 20 and 30 g/kg of sludge. Every addition was repeated three times to corn planted in a tub. To examine the effect of the treatments, the data were analyzed with ANOVA and Duncan test was applied when differences occurred between treatments. The results of the research showed that the nutrients contained in the manure which had been processed into biogas were not lost. The plants cultivated in the planting medium supplemented with sludge grew healthier, bigger, taller and had stronger and longer roots. On the contrary, the plants cultivated without sludge addition were vulnerable to white grub attack. The Cordyceps sp., which was added into the sludge, was effective to control the white grub. The concentration of Cordyceps sp. as much as 20 g/kg of sludge in corn planting medium was the most effective concentration to control white grub pest.展开更多
Microbiological investigation of the fossil animals preserved in permafrost represents obvious interest for science. Lack of data in this sphere gives even greater importance to any findings giving us opportunity to l...Microbiological investigation of the fossil animals preserved in permafrost represents obvious interest for science. Lack of data in this sphere gives even greater importance to any findings giving us opportunity to learn more about remote past of microorganisms. In this respect, preserved remains of fossil are considered as unique biological materials for scientific investigations. Bacillus bacteria strains isolated from the paleomicrobiota of mammoth fauna are not only have high durability （20-30 thousand of years） in permafrost, but are still able to produce biologically active substances. Strains of bacteria of the genus Bacillus, isolated from the tissues of the representatives of the mammoth fauna have strong antagonistic properties to hemolytic streptococci--Streptococcus equi, pathogenic for animals--Salmonella abortus equi, also toxigenic micromycetes genera Aspergillus, Alternuria, Penicillum and fungal pathogens of plant diseases--Botrytis cimeria and Fuzarium oxysporium. The strains of bacteria of the genus Bacillus are not pathogenic to plants and animals, but initially resistant to wide range of antibiotics. Dominance strains of Bacillus bacteria, producing strong bacteriocins in the soft tissues of fossil animals, contributing to their long cryo bio conservation. In addition, bacterial strains of Bacillus subtilis, isolated from paleo microbiota have strong oxidizing properties. Microbiota of fossils preserved in permafrost of Yakutia is of particular interest for microbiology and modem biotechnology.展开更多
基金Supported by Major National Scientific and Technological Projects(2012BAD19B03,2012BAD04B12,201303017)Project of Innovation Center of Hubei Academy of Agricultural Sciences~~
文摘The occurrence rules of major diseases and pests in rice were investigated under six cultivation patterns, i.e., mechanical plowing-artificial transplanting, mechanical plowing-mechanical transplanting, mechanical plowing-scattered transplanting,cattle plowing-artificial transplanting, cattle plowing-mechanical transplanting and cattle plowing-scattered transplanting. The results showed that the six cultivation patterns showed small effects on the occurrence of rice sheath blight, second-generation rice planthopper, rice stem borer and rice false smut, but showed great effects on the occurrence of rice leaf folder, third-and fourth-generation rice planthopper and weeds; there were certain differences in the rice yield among different cultivation patterns, and the rice yield under the pattern of mechanical plowing-mechanical transplanting ranked first, while that under the pattern of cattle plowing-scattered transplanting ranked last.
文摘Sod culture in peach orchards is an advanced soil management. The significances of sod culture in peach orchard are introduced, as well as the sod ways. The effects of sod culture in a peach orchard on soil, microclimate and growth and development of peach tree, and disease, pest and weed are reviewed. The problems in sod culture in peach orchard in China are summarized. Sod culture could increase soil fertility, improve soil physical properties, relieve soil temperature change, increase soil microbial growth and soil enzyme activity, improve microclimate and fruit quality, reduce physiological disease, insect pests and weeds.
基金Supported by Ministry of Science and Technology of China“National Project of Science and Technology for Food Production”(2004ba520a04)~~
文摘[Objective] Study on the effects of rice-duck mutualism on weeds and insects pests and economic benefits of paddy field. [Method] Comparison of the incidence of weeds, sheath blight and insects pest under rice-duck mutualism, conventional cultivation and control treatment, the yield and economic benefits were analyzed under the 3 treatments. [Result] Average occurrence of weeds in rice-duck mutualism group decreased by 2.33 and 52.0g ind/m^2 compared with that in conventional cultivation and control treatment ; the control rate of mutualism was up to 75% against rice hopper, but just between 25% -60% against rice leaf roller and Chilo suppressalis. The rates of diseased plant and diseased bell against rice sheath blight were higher and disease indices were lower compared with control group. The yield of mutualism group was identical with conventional cultivation, Which was greatly higher than that of control group. The results suggested an higher economic benefits and lower cost benefit ratio for rice-duck mutualism treatment. [Conclusion] Rice-duck mutualism gives birth to a positive effect to control the diseases, insect pests and weeds, as well as to economic benefits, providing basis on extension of rice-duck mutualism system.
基金Supported by the International S&T Cooperation Program of China(2010DFA32810)~~
文摘Herbal pesticides refer to the active ingredients extracted from herbs which are used for pest and disease control in crops or pure substances isolated from them. They are of great significance for the production of pollution-free agricultural products, as well as for exploiting the abundant plant resources in China for the prevention and control of pests. In this paper, the advantages of herbal pesticides,such as being environment-friendly, diverse patterns of action, safety for higher animals and the natural enemies of pests and making it hard for pests to produce resistance were first stated; then, Chinese herbal medicine resources with antibacterial and insecticidal activities from 49 families and their functions were reviewed, and 19kinds of herbal pesticides that have been developed and applied in China and seven kinds that have been produced on a large scale were also introduced; finally,three issues deserving further exploration during the development and application of herbal pesticides were presented, that is, research in variety selection and cultivation of herbs, and methods for extraction of active ingredients; basic research in the structure identification of herbal active ingredients, and the relationship between plant variety and active ingredients; development of lead compounds based on herbal active ingredients.
文摘Large and small doses of drugs for improving blood circulation and removing blood stasis were used in model rats to treat mild chronic hepatic damage induced by carbon tetrachloride (CCl4). The results show that large dose of Dang Gui ([symbol: see text] Radix Angelicae Sinensis) and Dan Shen ([symbol: see text] Radix Salviae Miltiorrhizae) (drugs for regulating blood flow) and small dose of Yu Jin ([symbol: see text] Radix Curcumae) and Niu Xi ([symbol: see text] Radix Achyranthis Bidentatae) (drugs for activating blood flow) can significantly elevate the activity of SOD (P
文摘Processing cow manure into biogas is a solution to reduce air pollutant, because it reduces the smell of the manure up to 70%. Besides producing biogas, the sludge of biodigester can also serve as solid and liquid fertilizer. The solid fertilizer can be used as carder of entomopathogenic fungi to control the pest which lives underground. The research aimed to investigate the benefits of biodigester sludge as fertilizer and carrier of entomopathogenic fungi （Cordyceps sp.） to control white grub pest. The use of organic fertilizer and pesticide in the cultivation can minimize the environmental hazard. The method used in the study was completely randomized design with four treatments, which were the addition of Cordyceps sp. corn media as much as 0, 10, 20 and 30 g/kg of sludge. Every addition was repeated three times to corn planted in a tub. To examine the effect of the treatments, the data were analyzed with ANOVA and Duncan test was applied when differences occurred between treatments. The results of the research showed that the nutrients contained in the manure which had been processed into biogas were not lost. The plants cultivated in the planting medium supplemented with sludge grew healthier, bigger, taller and had stronger and longer roots. On the contrary, the plants cultivated without sludge addition were vulnerable to white grub attack. The Cordyceps sp., which was added into the sludge, was effective to control the white grub. The concentration of Cordyceps sp. as much as 20 g/kg of sludge in corn planting medium was the most effective concentration to control white grub pest.
文摘Microbiological investigation of the fossil animals preserved in permafrost represents obvious interest for science. Lack of data in this sphere gives even greater importance to any findings giving us opportunity to learn more about remote past of microorganisms. In this respect, preserved remains of fossil are considered as unique biological materials for scientific investigations. Bacillus bacteria strains isolated from the paleomicrobiota of mammoth fauna are not only have high durability （20-30 thousand of years） in permafrost, but are still able to produce biologically active substances. Strains of bacteria of the genus Bacillus, isolated from the tissues of the representatives of the mammoth fauna have strong antagonistic properties to hemolytic streptococci--Streptococcus equi, pathogenic for animals--Salmonella abortus equi, also toxigenic micromycetes genera Aspergillus, Alternuria, Penicillum and fungal pathogens of plant diseases--Botrytis cimeria and Fuzarium oxysporium. The strains of bacteria of the genus Bacillus are not pathogenic to plants and animals, but initially resistant to wide range of antibiotics. Dominance strains of Bacillus bacteria, producing strong bacteriocins in the soft tissues of fossil animals, contributing to their long cryo bio conservation. In addition, bacterial strains of Bacillus subtilis, isolated from paleo microbiota have strong oxidizing properties. Microbiota of fossils preserved in permafrost of Yakutia is of particular interest for microbiology and modem biotechnology.
