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p示踪
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  p tracer
    STUDY ON CHANGES IN FRACTIONS AND AVAILABILITY OF PHOSPHORUS IN CALCAREOUS SOIL BY  ̄(32)P TRACER METHOD
    用~(32)P示踪法研究石灰性土壤中磷素的形态及有效性变化
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  “32p示踪”译为未确定词的双语例句
    STUDIES ON ABSORPTION AND UTILIZATION OF N AND P IN COMPOUND FERTILIZERS BY RICE USING TRACER TECHNIQUE OF ~(15)N AND ~(32)P
    应用~(15)N~(32)P示踪技术研究水稻对不同复(混)合肥料中氮磷的吸收
短句来源
    STUDY ON NUTRITION LAW OF FLUE─CURED TOBACCO OF NITROGEN AND PHOSPHORUS BY USING ISOTOPE TRACER 15N 32P
    应用同位素~(15)N、~(32)P示踪对烤烟氮、磷营养规律的研究
短句来源
    EFFECTS OF THE TOTALLY BASAL DRESSING TECHNIQUE TO WHOLE PLOUGH LAYER ON FERTILIZER UTILIZATION OF DOUBLE HARVEST RICE BY ~(15)N、~(32)P TRACERS
    应用~(15)N、~(32)P示踪法研究双季稻一次性全层施肥技术的肥料效应
短句来源
    Study on effects of phosphate activator on soybean absorbing fertilizer and soil phosphate utilization ratio using ~(32)P trace method
    利用~(32)P示踪技术研究土壤磷素活性剂对大豆吸收土壤和肥料磷素量的影响
短句来源
    Study of Circumstances of Hill Soil Erosion in Kunming by Used ~(32)P
    用~(32)P示踪法研究昆明市水土流失的规律
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  p tracer
The penetrating root hairs grew for 2 and 4 days in soil labelled with radioisotope phosphorus (P) tracer 32P (185 kBq g-1 dry soil) filled in another PVC tube.
      
A 32P tracer placed at a depth of 12.5, 37.5, 62.5 or 87.5 cm was employed to determine root system dynamics by sampling crop leaves at 0, 15, 30 and 45 cm lateral distance.
      
Using a 32P tracer, mosses removed from plots receiving PK in combination with NH4 maintained their affinity for increased phosphorus uptake.
      


Six chemical methods with different extractions for determining readily available phosphorus (RAP) content of three types of acid paddy soil in Jilin Province were studied.And the RAP contents evaluated from these methods were compared with A-value calculated from isotopic method with 32P and the quantity of phosphorus in seeds.Results showed that the correlation coefficient of RAP contents from Al-Abbas method to A-value (r = 0.89>r0.01=0.834),to the quantity of phosphorus in seeds (r = 0.754>r0.05=0.707) ,...

Six chemical methods with different extractions for determining readily available phosphorus (RAP) content of three types of acid paddy soil in Jilin Province were studied.And the RAP contents evaluated from these methods were compared with A-value calculated from isotopic method with 32P and the quantity of phosphorus in seeds.Results showed that the correlation coefficient of RAP contents from Al-Abbas method to A-value (r = 0.89>r0.01=0.834),to the quantity of phosphorus in seeds (r = 0.754>r0.05=0.707) , to the ferric phosphate-the main source of phosphorus in the soils (r = 0.946>r0.01 =0.834) were highly significant, significant, and highly significant,respectively.It is suggested by the authors that Al-Abbas method is the best one for determining readily available phosphorus of acid paddy soils in Jilin Province. (L)

本文以~(32)P示踪法测得的“A”值与盆栽试验水稻吸磷量为标准参比项,用6种化学提取法对吉林省3种酸性土壤的磷素形态进行研究。结果表明,Al—Abbas法与“A”值和水稻吸磷量分别达极显著相关与显著相关,与供给水稻磷素的主要磷源磷酸铁星极显著相关。建议在吉林省酸性水稻土上速效磷的化学提取法应采用Al—Abbas法。

It was shown in this experiment that all compound fertilizers tested had a significant effect on yield of rice compared with control. The range of increased grain yield was 60.8-77.7%. But there was no significant difference among the compound fertilizers. By using isotope 15N tracer,the efficiency of nitrogen utilization by rice was found as follows:urea-ammonium phosphate 44.65%,ammonium phosphate-chloride 44.54%,urea 44.12%, nitric phosphate 36.65%. The nitric phosphate could not be used in paddy field.The...

It was shown in this experiment that all compound fertilizers tested had a significant effect on yield of rice compared with control. The range of increased grain yield was 60.8-77.7%. But there was no significant difference among the compound fertilizers. By using isotope 15N tracer,the efficiency of nitrogen utilization by rice was found as follows:urea-ammonium phosphate 44.65%,ammonium phosphate-chloride 44.54%,urea 44.12%, nitric phosphate 36.65%. The nitric phosphate could not be used in paddy field.The results with isotope 32P showed that the efficiency of utilization of phosphorus by rice was as follows:22.55% for nitric phosphate, 22.36% for ammonium phosphate-chloride, 21.08% for superphosphate. The utilization rate of phosphorus of all compound fertilizers was significantly higher than that of superphosphate.

在盆栽条件下几种复(混)合肥料对水稻均有增产作用,与对照相比稻谷增产60.8—77.7%,达到显著水准。但几种复(混)合肥之间无显著差异。用15~(N)示踪法测定水稻对复(混)合肥的氮素利用率:尿素磷铵为44.7%,氯磷铵为44.5%,尿素为44.1%,尿素加普通过磷酸钙(简称普钙)为40.8%,硝酸磷肥为36.4%。说明硝酸磷肥不宜于水稻田施用。用~(32)P示踪法测定水稻对几种复(混)合肥的磷的利用率:硝酸磷肥为22.6%,氯磷铵为22.4%,尿素磷铵为21.1%,尿素加普钙为20.7%,普钙为11.9%。水稻对供试复(混)合肥料磷的利用率均显著高于普钙。

The pot experiments were conducted to study the availability of phosphorus from~(32)P-labelled superphosphate, hog manure, bagasse and their mixtures to stylosanthes guianensis CV. graham on latored soil. The results showed that the application of the fertilizers substantially increased the phosphorus uptake by plants and the forage grass yield. The mixed application of organic manure and superphosphate increased more soil Olsen-P and phosphorus uptake by plants than the single application of superphosphate....

The pot experiments were conducted to study the availability of phosphorus from~(32)P-labelled superphosphate, hog manure, bagasse and their mixtures to stylosanthes guianensis CV. graham on latored soil. The results showed that the application of the fertilizers substantially increased the phosphorus uptake by plants and the forage grass yield. The mixed application of organic manure and superphosphate increased more soil Olsen-P and phosphorus uptake by plants than the single application of superphosphate. The phosphorus from organic manure was more available than that from inorganic one. For the first 39-day, the phosphorus utilized coefficient for the single application of superphosphate was 2.14%, which was 2 times as much as that for the mixtures. For the 80-day period, the mixing of organic manure and superphosphate increased the phosphorus efficiency, and the mixture of bagasse and superphosphate obtained a highest utilized coefficient of 22.88%.

本试验利用~(32)P示踪法研究赤红壤上两种有机物料与过磷酸钙混合施用对磷有效性的影响。盆栽试验表明,纸厂废料蔗渣或猪粪与磷肥混合施用比磷肥单独施用更有利于提高格拉姆柱花草的含磷量和总吸磷量。单位施磷量引起的土壤有效磷和植株吸磷量的增加量也是有机物料单施或与磷肥混施高于磷肥单施。在前39d,~(32)P标记过磷酸钙的利用率在单独施用时为2.14%,比混合施用高一倍左右;在80d时,混合施用的磷利用率较快提高,蔗渣与磷肥混施处理超过单独施用,达22.88%。

 
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