排序方式： 共有8条查询结果，搜索用时 218 毫秒
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为探究蚯蚓粪与化肥配施对陕西关中地区红小豆产量及品质的影响,以红小豆新品种保红947为研究对象,设置T1(纯化肥)、T2(20％蚯蚓粪+80％化肥)、T3(50％蚯蚓粪+50％化肥)、T4(80％蚯蚓粪+20％化肥)和CK(不施肥)5个处理,研究了不同处理下红小豆成熟期农艺性状、产量性状及品质性状的差异.结果表明:蚯蚓... 相似文献
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数控无卡轴旋切机的设计与调试 总被引：2，自引：0，他引：2
介绍了数控无卡轴旋切机的先进性能，主要技术参数、重点设计过程及关键调试点。 相似文献
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通过检测和分析烟叶化学成分,探讨陕西秦巴烤烟品质状况,为选择优良品种和配套技术改善烟叶质量提供依据。于2012-2017年,从陕西秦巴烟区重点植烟县采集了197个烤烟样品,对烤烟烟碱、总氮、还原糖、总糖、钾、氯和淀粉等7个化学成分指标的含量分布特征进行了分析。结果表明,氯和淀粉的变异系数远高于其他成分。由偏度值可看出,秦巴烟叶中各化学成分频率分布基本上属于左偏型。不同年份之间的各指标均差异显著,其中2012年各指标明显高于其他年份。总氮、还原糖以及钾含量、氮碱比在不同品种之间差异显著,其中云烟97的钾含量为2.21%,还原糖含量为24.54%,均显著高于其他四个品种。总氮、还原糖、总糖、钾、两糖比在不同地区之间显著差异。不同部位烟碱、氮、总糖、钾含量差异显著。烟碱、总氮、还原糖、总糖、钾在烟叶中的浓度符合正态分布;氮碱比、糖碱比符合对数正态分布。烟碱、总氮、还原糖、钾在烤烟中符合国际型优质烟的概率为80.96%、91.27%、16.01%、75.84%。总体而言,陕西省秦巴烟区整体质量较好,尤其是烟碱和总氮的含量较为符合国际型优质烟标准,云烟97的化学成分协调性优于其他品种,根据不同烟区和不同部位烟叶的烟叶化学成分分布特征,采取技术措施进一步提高其协调性。 相似文献
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To explore the effects of common silicon fertilizer and nano-silicon fertilizer on the population structure of endophytic fungi in flue-cured tobacco,Yunyan 99 was used as test material, common silicon and nano-silicon were sprayed at vigorous growth,budding and dome stages.The treatments were set as follows: CK (water), T5 (common silicon,0.17 kg/hm2), T8 (nano-silicon,0.32 kg/hm2).The effects of different silicon fertilizer on the diversity, composition, structure, chemical composition and aroma substance of endophytic fungi in flue-cured tobacco were studied. Compared with CK, T5 and T8 treatment could effectively improve the community diversity,composition, structure and the content of chemicals and aroma substances. Compared with CK, the diversity of endophytic fungi increased under T8 treatment and decreased under T5 treatment.Compared with CK, the relative abundance of Basidiomycota under T5 and T8 increased by 58.14% and 37.35%, respectively,at the same time, the relative abundance of Flobasidium increased by 113.17% and 417.07%, respectively.Among them, T8 treatment increased the species of endophytic fungi, among which,31 species were more than CK treatment. The correlation analysis was based on chemical composition, aroma substances of tobacco leaves and endophytic fungal community composition.The contents of nicotine,soluble protein,Maillard reaction products and aroma substances were significantly related to the community composition of endophytic fungi in tobacco leaves. The diversity of endophytic fungi in tobacco leaves could be increased by spraying nano-silica fertilizer on leaf surface,and the content of chemicals and aroma substances of tobacco could be changed.It is meaningful for human to produce high quality flue-cured tobacco. 相似文献
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通过在青蒜苗作物上开展化肥减量增效套餐产品效果比较试验,以考察其节肥增效效果。结果表明,青蒜苗施用思创格科技套餐产品与农户常规施肥相比,不仅产量、产值明显增加,其中产量每公顷增加5677.5 kg,增长14.7%;产值每公顷增加23 184元,增长14.0%。而且还具明显的减肥效果,每公顷节约N211.95 kg,降幅69.06%;节约P_2O_5 96.15 kg,降幅68.19%;节约K_2O 304.65 kg,降幅84.77%,为"到2020年化肥使用零增长行动"的实施提供了依据。 相似文献
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为鉴定驴精液中分离到的1株细菌的种类,采用形态学观察、绘制分离菌生长曲线和PCR扩增法对分离菌株进行了种类鉴定,并采用细菌药物敏感实验对该菌株进行了耐药性分析.结果表明,该菌在甘露醇高盐琼脂培养基上可形成边缘整齐、圆形、光滑湿润的不透明黄色菌落,革兰染色发现该菌为革兰阳性菌,呈葡萄串球菌;生长曲线分析结果显示,该菌在5... 相似文献
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