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Characteristics of change of humic substance in soil in degraded grass lands
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《Journal of Environmental Sciences》 SCIE EI CAS CSCD 1997年第4期109-113,共5页
CharacteristicsofchangeofhumicsubstanceinsoilindegradedgraslandsShengXuebinResearchCenterforEcoEnvironmental... CharacteristicsofchangeofhumicsubstanceinsoilindegradedgraslandsShengXuebinResearchCenterforEcoEnvironmentalSciences,Chinese... 展开更多
关键词 SOIL Characteristics of change of humic substance in soil in degraded grass lands
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Mechanisms of immunization of rice seedlings-the change of anti-pathogen substance content
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作者 YU Yunzhen MAO Guojie YANG Jiashu Plant Protection Dept,Shenyang Agri Univ,Shenyang 110161.China 《Chinese Rice Research Newsletter》 1998年第2期9-10,共2页
The damage caused by rice damping-off diseasecould be controlled efficiently by planting vig-orous seedlings. By adjusting the environ-ment, immunization of rice nursery (IRN)could raise seedlings with well developed ... The damage caused by rice damping-off diseasecould be controlled efficiently by planting vig-orous seedlings. By adjusting the environ-ment, immunization of rice nursery (IRN)could raise seedlings with well developed rootsand high physiological activity. These 展开更多
关键词 high Mechanisms of immunization of rice seedlings-the change of anti-pathogen substance content IRN
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