By two years （2007-2008） located fertilizer experiment, the effect of long-term combined application of organic and inorganic fertilizers on black soil fertility and crop yield was investigated in Shuangcheng City, ...By two years （2007-2008） located fertilizer experiment, the effect of long-term combined application of organic and inorganic fertilizers on black soil fertility and crop yield was investigated in Shuangcheng City, Heilongjiang Province. The results showed that the combined application of organic and inorganic fertilizers could increase the organinc matter, alkaline nitrogen, available phosphorus and available potassium. At the same time, the increasing application of organic fertilizer could reduce the soil bulk density and improve the field moisture capacity. Field moisture capacity and organic matter of the combined application of high quantities of organic manure and inorganic fertilizers AtB5 treatment increased the fhstest, organic matter increased by 3.33 g. kg and field moisture capacity increased by 11.25% than the beginning of the experiment. Under the same fertilization, the combined application of organic and inorganic fertilizers＇ increasing production range was higher than the single chemical fertilizers＇ which was from 0.8% to 9.4%. The results showed that the combined application of organic and inorganic fertilizers could increase the nutrient contents of soil and also was the highest productivity contribution to black soil fertility. It was the best fertilization structure of increasing productivity level and improving the soil fertility.展开更多
In order to study the effects of biochar-based organic fertilizer on the accumulation of the total flavonoid contents in dandelion after sowing,the experiment applied four levels of treatments of carbon-based organic ...In order to study the effects of biochar-based organic fertilizer on the accumulation of the total flavonoid contents in dandelion after sowing,the experiment applied four levels of treatments of carbon-based organic fertilizer(0.15,0.30,0.45,and 0.60 kg•m^(-2)),and the base fertilizer that only applied conventional chemical fertilizer was used as the control.The total flavonoid contents and physiological indices of dandelion in different growth periods were determined.The results showed that the accumulation of the total flavonoid contents in leaves and roots of dandelion improved significantly by applying biochar-based organic fertilizer(0.15,0.30,0.45,and 0.60 kg•m^(-2)),with the highest total flavonoid occurred in the 0.45 kg•m^(-2) biochar-based organic fertilizer treatment.Along with dandelion growing,the total flavonoid contents in leaves were first elevated,and then decreased,with the maximum reached at 95 days after sowing(anthesis).While the total flavonoid contents in roots were elevated constantly.The total flavonoid contents accumulation in dandelion were positively correlated with net photosynthetic rate,stomatal conductance,transpiration rate,soluble sugar content,soluble protein,nitrate nitrogen,and available potassium,while negatively correlated with intercellular CO_(2) concentration.展开更多
[目的]解决烤烟生长连作障碍。[方法]通过2021—2023年生物有机肥定位试验,研究连续3年生物有机肥施用对连作植烟土壤养分及微生多样性的影响。[结果]连作种植下连续3年施用生物有机肥的植烟土壤pH及有机质呈上升趋势,碱解氮含量降低,...[目的]解决烤烟生长连作障碍。[方法]通过2021—2023年生物有机肥定位试验,研究连续3年生物有机肥施用对连作植烟土壤养分及微生多样性的影响。[结果]连作种植下连续3年施用生物有机肥的植烟土壤pH及有机质呈上升趋势,碱解氮含量降低,有效磷及速效钾含量保持稳定。MiSeq高通量测序技术对植烟土壤细菌16S DNA V3~V4区域及真菌ITS ITS1的检测结果显示,连作种植下随着生物有机肥施用年限的增加,植烟土壤中的细菌及真菌OTUs数目、Chao1指数、香浓指数及物种数目呈增加趋势。在门水平上,连作植烟土壤酸杆菌门(Acidobacteria)丰富度随着生物有机肥施用年限的增加而增加,而拟杆菌门(Bacteroidetes)相对丰度减少;植烟土壤生物有机肥施用1年,子囊菌门(Ascomycota)丰富度最高,连续施用2年担子菌门(Basidiomycota)丰富度最高。[结论]生物有机肥能够降低连作植烟土壤酸化状况,提高土壤有机质含量,增加土壤微生物多样性,对稳定土壤速效养分具有一定的作用,为解决烟区连作障碍提供一定的理论依据。展开更多
基金Supported by Black Soil Conservation Tillage and Oriented Cultivation Technology Research (GB06B107-1)Innovation Fund of Northeast Agricultural University (CXP7003-3-3)+1 种基金Northeast Agricultural University and the Scientific Research Fund of Heilongjiang Province to Black CollegesUniversities Cold Key Laboratory of Utilization and Protection of Open-funded Projects (GXS08-5)
文摘By two years （2007-2008） located fertilizer experiment, the effect of long-term combined application of organic and inorganic fertilizers on black soil fertility and crop yield was investigated in Shuangcheng City, Heilongjiang Province. The results showed that the combined application of organic and inorganic fertilizers could increase the organinc matter, alkaline nitrogen, available phosphorus and available potassium. At the same time, the increasing application of organic fertilizer could reduce the soil bulk density and improve the field moisture capacity. Field moisture capacity and organic matter of the combined application of high quantities of organic manure and inorganic fertilizers AtB5 treatment increased the fhstest, organic matter increased by 3.33 g. kg and field moisture capacity increased by 11.25% than the beginning of the experiment. Under the same fertilization, the combined application of organic and inorganic fertilizers＇ increasing production range was higher than the single chemical fertilizers＇ which was from 0.8% to 9.4%. The results showed that the combined application of organic and inorganic fertilizers could increase the nutrient contents of soil and also was the highest productivity contribution to black soil fertility. It was the best fertilization structure of increasing productivity level and improving the soil fertility.
基金Supported by the National Key Research and Development Project(2021YFD16009012021YFD1600902)。
文摘In order to study the effects of biochar-based organic fertilizer on the accumulation of the total flavonoid contents in dandelion after sowing,the experiment applied four levels of treatments of carbon-based organic fertilizer(0.15,0.30,0.45,and 0.60 kg•m^(-2)),and the base fertilizer that only applied conventional chemical fertilizer was used as the control.The total flavonoid contents and physiological indices of dandelion in different growth periods were determined.The results showed that the accumulation of the total flavonoid contents in leaves and roots of dandelion improved significantly by applying biochar-based organic fertilizer(0.15,0.30,0.45,and 0.60 kg•m^(-2)),with the highest total flavonoid occurred in the 0.45 kg•m^(-2) biochar-based organic fertilizer treatment.Along with dandelion growing,the total flavonoid contents in leaves were first elevated,and then decreased,with the maximum reached at 95 days after sowing(anthesis).While the total flavonoid contents in roots were elevated constantly.The total flavonoid contents accumulation in dandelion were positively correlated with net photosynthetic rate,stomatal conductance,transpiration rate,soluble sugar content,soluble protein,nitrate nitrogen,and available potassium,while negatively correlated with intercellular CO_(2) concentration.
文摘[目的]解决烤烟生长连作障碍。[方法]通过2021—2023年生物有机肥定位试验,研究连续3年生物有机肥施用对连作植烟土壤养分及微生多样性的影响。[结果]连作种植下连续3年施用生物有机肥的植烟土壤pH及有机质呈上升趋势,碱解氮含量降低,有效磷及速效钾含量保持稳定。MiSeq高通量测序技术对植烟土壤细菌16S DNA V3~V4区域及真菌ITS ITS1的检测结果显示,连作种植下随着生物有机肥施用年限的增加,植烟土壤中的细菌及真菌OTUs数目、Chao1指数、香浓指数及物种数目呈增加趋势。在门水平上,连作植烟土壤酸杆菌门(Acidobacteria)丰富度随着生物有机肥施用年限的增加而增加,而拟杆菌门(Bacteroidetes)相对丰度减少;植烟土壤生物有机肥施用1年,子囊菌门(Ascomycota)丰富度最高,连续施用2年担子菌门(Basidiomycota)丰富度最高。[结论]生物有机肥能够降低连作植烟土壤酸化状况,提高土壤有机质含量,增加土壤微生物多样性,对稳定土壤速效养分具有一定的作用,为解决烟区连作障碍提供一定的理论依据。
