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党的十九大将乡村振兴战略写进报告,前不久中央发布的《关于实施乡村振兴战略的意见》(中央1号文件),将乡村振兴战略的落实进行了细化,开启了我国乡村发展的新时代,乡村振兴战略是一个关乎全局的长期任务,需要我们科学谋划。40年的改革开放,我国乡村发展取得了很大成绩,但市场经济的快速发展使得农民群众物质富裕精神空虚,出现大操大办、厚葬薄养等陈规陋习,必须加强农村思想道德建设。  相似文献   
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矮化中间砧对红富士苹果果实品质的影响   总被引:9,自引:0,他引:9  
为选择应用苹果矮化中间砧提供科学依据,以‘红富士’苹果为试材,研究了不同矮化中间砧对果实品质的影响。结果表明,以SH5和SH38为中间砧的红富士苹果,果实内在品质包括果实的含糖量、可溶性固形物含量、果实糖酸比值以及维生素C含量等方面,均显著优于以M26为中间砧的;从果实着色级数、色调级数、果面光洁度级数来看,以SH5为中间砧的红富士苹果,果实极显著优于其他中间砧的,以B9和M26为中间砧的红富士苹果果实相对较差,而中间砧SH38的果实也优于以B9和M26为中间砧的;从果实大小来看,以SH5为中间砧的果实最小,而以B9为中间砧的果实最大。  相似文献   
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雨期棉铃虫防治研究马宝,王学平,刘萍(江苏省如皋市植保站226500)如皋市地处长江下游,东邻黄海,8月份四代棉铃虫发生期间多台风和雷阵雨天气,防治效果受其影响较大,虽在施药时增加助剂,但防效仍不同程度地下降,雨水、大风成为影响本市四代棉铃虫防治效果...  相似文献   
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An investigation of the dry matter degradability (DMD) and effective dry matter degradability (EDDM) was performed for barley, wheat, rye, corn, triticale and oat samples, using the Nylon-bag technique. Gas production (GP), metabolizable energy (ME) and in vitro organic matter digestibility (IVOMD) were also studied by using Hohenheim gas test. The DM from barley, wheat, rye and triticale was digested rapidly in the rumen, and, at the 48 h of incubation, degradability was found to be approximately about 80%. The higher degradability observed for these grains than for oats and corn was attributable to the structure of these grains. In contrast, DM of corn and oats was degraded very slowly and reached 66.7 and 66.5 at 48 h, respectively. Effective degradability values of barley, wheat, rye, corn, triticale and oats were determined to be 61.4, 69.0, 64.0, 41.7, 66.7 and 58.6% in 5% rumen outflow rate, respectively. At the end of the 48 h incubation, total gas productions in barley, wheat, rye, corn, triticale and oats were estimated to be 83.6, 87.2, 87.5, 83.5, 85.8 and 63.9 ml/200 mg DM, respectively. The mean ME values of these grains calculated from cumulative gas amount at 24 h incubation were 11.8, 12.1, 12.3, 10.9, 12.4 and 10.2 MJ/kg DM, respectively. In vitro digestible organic matter of barley, wheat, rye, corn, triticale and oats were estimated to be 85.0, 87.3, 88.2, 79.5, 89.0 and 72.6%. Percentage overall EDDM (k=5%) of barley, wheat, rye, triticale and oats was positively correlated with in vitro GP at 6 h, cumulative GP at 24 h and total GP at 48 h (p<0.05). As a result, in situ dry matter degradation of grains showed great differences depending on the chemical compositions. In situ EDDM of grains may be predicted from in vitro gas production parameters.  相似文献   
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84K杨栽培技术   总被引:1,自引:0,他引:1  
84K杨是一个白杨派杂种无性系,它具有繁殖容易,根系发达,生长迅速,适应性广,抗病性强等优良特性。尤其是它树干通直、树皮光滑,叶片浓绿,树姿优美,雄性,不飞絮,有很好的观赏价值。所以,84K杨广泛用于营造防护林、速生丰产林,用于城乡绿化,渠路旁植树。  相似文献   
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For most evaluating methods of engineering rock mass, the integrality index is an important assessment factor. However, sometimes the value of integrality index would be more than 1.0 because of unloading effect of rock samples and differentia of frequency between the measurements of rock samples and rock mass. In order to solve this problem, unloading index and frequency correcting coefficient were put forward to revise the integrality index. Moreover, the BQ evaluating method proposed in the national standard (GB 50218-94) was improved with the revised method. With the case study of the project of water sealed underground oil tank in Huangdao, it was found that the quality of rock mass in the site was grade I or II.  相似文献   
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