速效钾

ICP-AES法与传统FAAS法测定土壤速效钾和钠的数据可转换性研究

Convertibility of the Data Determined by ICP-AES and FAAS for Soil Available K and Na

在0～100cm的土层内，有机质的变异系数为96.3%，全氮为101.4%，碱解氮为80.6%，速效钾为88.4%。

The variation coefficient of organic matter was 96.3 % , of total N was 101.4 % , of hydrolytic N was 80.6 % , and of available K was 88.4 % in layer of 0 ~ 100cm .

pH变异函数符合线性模型，速效钾符合指数模型，pH和速效钾具有中等的空间相关性；

The spatial correlation between available potassium and pH was moderate .

香蕉地土壤pH的空间变异及其对土壤速效钾的影响

Influence of the spatial variation of soil pH on soil available potassium in banana plantation

长期不施钾肥B类土壤缓效钾和速效钾含量降低较少，上述一系列变化的幅度也较小。

The content of slow-available K and available K decreased slightly , and other changes mentioned above were smaller in type B soil .

施钾明显增加土壤速效钾含量，而充足的N素促进了生菜对钾的吸收。

Potassium application increased the content of soil available potassium . Increasing nitrogen level was advantageous to the potassium obsorption by romaine lettuce .

4与最佳植茶区相比较，适宜区存在一些轻度限制因子，主要包括土壤pH，碱解氮、速效钾含量；

Compared with the first class , soil pH , available nitrogen and potassium were the slightly limited factors of the second class .

土壤微生物对碳源利用受到土壤pH、速效钾的显著影响。

Carbohydrates and Amino acids were the main carbon resources of microbe utilization and mainly affected by pH and available K in soil .

绝大部分土壤速效钾含量低于150mg／kg，钾是本区域优质烤烟生产的主要限制因子。

Potassium is the main limit nutrient in this district for tobacco production .

结果表明，流动沙丘与其它植被类型相比土壤颗粒较粗，有机质含量贫乏，速效钾和pH也较低，但全氮和速效磷的含量却相对较高；

The soil of moving dune has coarser granule , more total nitrogen and available phosphorus , but less organic content , available kalium and lower pH value .

有机质的理论模型是球状模型，全氮、有效磷是指数模型，pH值、速效钾是线性模型。

The optimal model of organic matter was the spherical model ; total nitrogen and phosphorus were the index model , pH , potassium were the linear model .

生物质炭施用显著增加了表层土壤pH、有机碳和速效钾含量，增加幅度随着施用量的增加而增加；对土壤全氮、速效磷含量没有影响；但是显著降低了土壤容重。

Biochar amendment increased soil pH , organic carbon and available K concentration , with no influence on soil total N and available P , but decreased soil bulk density .

pH、有机质、碱解氮、速效钾、有效铁、铜、锌用指数模型拟合，变程介于216～733米。

PH , OM , AN , AK , Available Fe , Available Cu , Available Zn was fitting by exponential model , the range were 216 miters to 733 miters .

对临泽县主要土壤类型的有机质、全氮、全磷、速效钾、速效磷、全盐量、ph值进行了化验分析。

Analyzing the organic matter , Nitrogen , Phosphorus , Fast working Kalium , Fast working Phosphorous , total salt quantity and PH value of the main type of soil in Linze county .

土壤pH、有机质、碱解氮、有效磷、速效钾和缓效钾的拟合理论模型均为指数模型。

The fitting theory model of the soil pH , the available nitrogen , soil available phosphorus , available potassium , slowly available potassium and the organic matter were the exponential model . 3 .

在土粪基础上增施化学K肥能保持和提高土壤速效钾，土壤缓效钾下降速率是速效钾的6.5～8.2倍。

The mixed application of chemical potassium and manure can improve the available effect of potassium in soils . The decreasing rate of slow effective K is 6.5-8 . 2 times of fast effective potassium .

D值与土壤pH值、全磷含量呈极显著正相关，而与有机质、全氮、速效钾含量相关性均未达到显著水平。

There were a significant positive correlation between D value , pH value and total phosphorus content , but organic matter , total nitrogen and available potassium content did not have significant correlation with D value .

黑云母花岗岩母质水稻土的现实速效钾最大，玄武岩母质者最小；但在ARc~k一致的条件下则机反。

The rapidly available potassium in the paddy soils derived from biotite granite are maximal and that from basalt are minimal , but it 's opposite in same AR_e ~ K.

农艺实验表明，施用硅钾肥不仅能够提高作物产量，还能提高土壤中速效钾和缓效钾含量，对土壤pH影响不大。

The agricultural experiments showed that not only the crop output was increased but also the content of K in the soil was also increased and the influence on the pH value of the soil is weak .

通过研究土壤速效钾的空间变异性，获取香蕉地土壤速效钾、pH的连续分布图，为土壤钾养分分区管理及科学施肥提供依据。

Continued distribution map of soil available potassium and pH were obtained through researching on the spatial variability of soil available potassium , and it could provide reference to the management and scientific fertilization of soil potassium nutrient .

在各个土培时期，相同施用量时配方中PAM含量的不同对沙质土壤速效钾含量的影响均不明显。

During every culture period , different content of PAM of formula in the same application amount had weak effect on the content of available potassium in the sandy soil .

而速效钾含量变化规律性不明显。因此，杉木初植密度尽量控制在2805&3750株／hm2之间，以利于杉木产量提高和地力维护。

The planting density of Chinese fir must be confined from 2805 to 3750 trees per hectare in order to raise the yield and maintain the soil fertility .

与K素配施土壤K素亏缺量年均降低28.8%～78.5%，土壤速效钾比单施提高84.6%～128%。

In the combined fertilization of organic and potassium fertilizers , the shortage of soil potassium decreased by 28.8 % ~ 78.5 % and the available potassium increased by ( 84.6 % ~) 128 % compared with those in their single fertilization .

土培60天后，施用秸秆改良材料的大部分处理速效钾含量达到最大，各处理的速效钾含量较CK提高了60.59%-217.96%。

After 60 days of soil culture , the content of available potassium of most treatment with straw modified material reached maximum and were 60.59 % - 217.96 % higher than that of CK .

PBC与玉米子粒和总干物质相对产量之间达极显著相关、与土壤速效钾之间达显著相关。

PBC were very significantly correlated ( p-0.01 ) with the relative grain yield and relative total dry matter yield of corn , and significantly correlated with soil available K.

为了找出设施农业土壤磷素富集的动态变化规律以及磷素养分与土壤pH、有机质、土壤质地、氮素养分、速效钾、重金属镉和土壤酶的关系。

In order to find the dynamic change law of phosphorus enrichment in facility agricultural soil , and the relationship between phosphorus nutrients and soil pH , organic matter , soil texture , nitrogen nutrient , rapidly-available potassium , cadmium and enzymes in the soil .

覆盖后0～40cm土体中土壤全N、全P在一个生长季节后变化不明显，但土壤有机质、速效钾含量有所增加；

In the top soil layer ( 0 ~ 40 cm ), the changes of total N , total P were not obvious during the growth period of wheat , but the content of organic matter and available K was increased .

对剖面化学指标的方差分析显示，有机质、全氮、碱解氮、速效钾和CEC在剖面层次间均存在显著差异。

Variance analysis of the chemical indexes of profile suggests that organic matter , total nitrogen , alkali-hydrolysable nitrogen , rapidly available potassium and CEC are greatly different among layers of soil profile .

研究结果表明，钾肥利用率与作物收获后的土壤速效钾含量呈极显著的负相关，与土壤阳离子交换量（CEC）也呈显著的负相关。

The correlation of the recovery rate of K fertilizer to soil available K after harvest was negative and very significant , and so was to soil cation exchange capacity ( CEC ) .

受植物、放牧家畜排泄物等的影响，土壤氮含量显著升高，有效磷、速效钾变化具有波动性，在极度退化阶段含量最高，达到显著水平（p0.05）。

By impacts of plants and livestock excreta , soil nitrogen was significantly increased , and the changes of available P and K were in volatility so that the contents were highest in the extreme degradation stage , reaching significant levels ( p0.05 ) .