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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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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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如今许多规模化猪场采用早期断奶的方式来提高母猪繁殖力,促进仔猪生长发育,国外还提出了14日龄超早期断奶的生产模式.本研究对14天、21天和28天断奶仔猪的猪瘟疫苗免疫效果进行研究,从仔猪出生后到出栏前分时间点进行猪瘟疫苗抗体检测.试验结果表明,早期断奶可引起仔猪明显的应激反应,其中14日龄超早期断奶仔猪猪瘟免疫效果低于其他两组.根据我国目前的养猪生产水平及防疫现状,不建议使用国外推行的14日龄断奶生产模式,可采用21日龄断奶模式,并检测抗体水平的变化随时调整猪瘟疫苗的二免时间. 相似文献
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