k2o

Alteration and enrichment of K2O in rock are derived mainly from mantle fluid activity .

岩石钾交代与钾质升高归根于富碱的地幔流体活动。

K2O content and variation reflect the evolution of the rock and K-metasomatism .

钾质高低及变化可反映岩石演化程度和钾交代作用。

Whereas the treatment with the N : K2O ratio of 1:1 could yield high level of nicotine and total nitrogen .

N：K2O为1：1的处理烟叶烟碱含量较高，其处理在生育后期总氮处于相对较高的水平。

According to the marginal theory , the economical K application rate was 75-90 kg ( K2O ) / ha .

依据边际理论求得经济合理施钾量为75～90kg（K2O）／ha。

The total nutrient content ( i.e. N + P2O5 + K2O ) could meet the standard of organic fertilizer .

各处理堆肥结束后的总养分含量（N+P2O5+K2O）均能满足有机肥料标准。

The amount of applying Potash ( K2O ) in production is within 13 kg / 667m2 , can obtain higher yield and better quality .

生产上推荐施钾量（K2O）在12-13kg/667m2范围，可以取得较高的产量和较好的品质。

ω( Na2O + K2O ) 0.17 ~ 1.47 % , the majority less than 0.5 % ;

ω（Na2O+K2O）0.17%~1.47%，多数小于0.5%；

The mathematical model of planting density , applied amount of N , P2O5 and K2O for plot yield of maize variety Kenyu No.6 was established .

通过四因素二次旋转回归正交试验，建立了垦玉6号玉米品种籽粒产量与种植密度、施氮量、施磷量、施钾量的数学模型。

This paper presented a method for modifying potassium titanate whiskers ( K2O6TiO2 ) to obtain polymethyl methacrylate ( PMMA ) / K2O ? TiO2 composite particles through emulsion polymerization .

采用乳液聚合方法，使甲基丙烯酸甲酯在钛酸钾晶须表面聚合，获得了表面包覆聚甲基丙烯酸甲酯的PMMA/K2O6TiO2复合粒子。

The ratio of investigation and output is 2 . 74 . In present production level , the optimum rate for soil which is rich in K is 75 ￣ 150kg ( K2O ) / hm2 .

在目前生产水平下，富钾褐土棉花钾肥用量以75～150kg（K2O）／hm2为宜。

With the structure readjusting of farm product and development of agriculture , the potentiality of market demand for chloride-free potash fertilizer is great and the annual demand is probably more than 100 000 t ( K2O ) .

随着农产品结构调整与高效农业发展，无氯钾肥市场需求潜力巨大，年需求量至少在100万tK2O以上。

In this paper , we work out a forecast equation for aim-yield of rice , an equal-product-curve equation under different application rates of N and K2O , and the optimum proportion equation for N and K2O .

求导了水稻目标产量的预测方程，不同氮钾施用水平的等产方程，以及氮钾最佳配比方程。

When CaF2 and ( K2O + Na2O ) are decreased to about 2.52 % and 0.19 % respectively , the viscosity and melting temperature of slag is reduced to the values close that of common BF slag .

渣中CaF2和（K2O＋Na2O）分别降至3.52%和0.19%左右时，炉渣粘度和熔化性温度就可接近普通高炉渣的水平。

The results showed that the fresh and dry weights of rape seedlings in the four soils were all increased by application of 0.3, 0.6g K2O / kg , but the increasing rates of two upland soils were lower than those of two paddy soils .

结果：施用K＿2O0.3g／kg和0.6g／kg，4种土壤上油菜幼苗鲜、干重均较不施对照增加，但两种旱地土壤的增值小于两种水稻土。

The age is Miocene Epoch . K2O / Na2O is greater than 1 and the ore forming material consists of deep seated mantle derived material mixed with crust-derived material . The volcanic rocks formed and evolved during continent intraplate orogeny .

K2O/Na2O>1，说明成矿物质为深部幔源物质混合了壳源物质，属大陆板内造山晚期演化的火山岩类型。

The annual production of chloride-free potash fertilizer is less than 50 000 t ( K2O ) , including potassium sulphate , potassium nitrate , potassium dihydrogen phosphate , potassium metaphosphate , magnesium potassium sulphate , cement flue dust , silicon-potassium fertilizer .

我国目前生产的无氯钾肥主要有硫酸钾、硝酸钾、磷酸二氢钾、偏磷酸钾、硫酸钾镁、窑灰钾肥、硅钾肥，年总生产不足50万tK2O。

Through the potassium fertilizer test on eggplant , the result demonstrates : when the optimum fertilizer ratio of N ∶ P2O5 ∶ K2O is 450 ∶ 300 ∶ 300kg / ha , the eggplant 's output is up to 93015kg / ha ;

通过在茄子上的钾肥试验，结果表明茄子最佳氮磷钾配比为4503∶003∶00kg/ha，茄子产量可达93015kg/ha。

Diabase dikes exposed on the northwestern margin of the Tarim basin contain 44.34 % - 49.3 % SiO2 have higher values of Na2O + K2O ( 4.32 % - 6.04 % ) and Na2O / K2O ( 2.23-9.15 ), showing the features of intraplate basalt .

塔里木盆地西北缘出露的辉绿岩墙的SiO2含量为44.34%～49.34%，Na2O+K2O（4.32%～6.04%）和Na2O/K2O均较高（2.23～9.15），主量元素反映板内玄武岩的特点。