氮磷钾

坡缕石和氮磷钾对红芪养分吸收的影响

Effect of Palygorskite and NPK on Nutrient Absorption of Radix Hedysari

天津市主要类型土壤氮磷钾经济合理用量和适宜配比的研究

The studies on economical and rational dose of NPK and proper proportions using on the main soil types in Tianjing

HA有机&无机复混肥中氮磷钾缓释效果的测定

Determination of the Slow Release Effect of N , P_2O_5 , K_2O of HA Organic-inorganic Compound Fertilizer

沼液全量和水溶性氮磷钾养分平均含量均以K>N>P，沼渣则以P高于N、K。

The average contents of nutrients in slurry were found to be in an order : K > N > P , exception of P , which in dregs was higher than K and N.

对出厂污泥的特征进行了分析，包括：含水率、pH值、有机物、氮磷钾的含量、重金属含量、燃烧热值等。

Analyzing the characteristics of the sludge , including : Moisture content , pH value , organic matter , nitrogen phosphorus potassium content , heavy metal content , burning calorific capacity , and so on .

大豆种植区养分有效性的发挥与土壤的pH值、机械组成及氮磷钾的比率等有一定的关系。

The ecological effect of root exudates was discussed in the present paper . the availability of main nutrients is relative to pH value , soil mechanical composition and the ratio of N , P and K.

土壤速效氮磷钾对腐殖质各组份都有影响，但对HA/FA比值影响最大的是碳酸钙和pH。

The available N , P and K contents in soil affect the compositions of humus , and the calcium carbonate and pH of soil are the most important factors in affecting the ratio of HA and FA .

ASI法测定土壤速效氮磷钾的方法比较及相关性研究进展

Advance in comparison on determination of available nitrogen , phosphorus , potassium in soil by ASI method and its correlation with fertilizer absorption

均衡施用氮磷钾处理（NPK）下的土壤呼吸速率、土壤累积呼吸量、土体累积呼吸量和根际累积呼吸量高于不均衡施用化肥的处理。

Soil respiration rate , soil cumulation respiration , bulk cumulation respiration , rhizosphere cumulation respiration under NPK treatment were higher than other unbalanced fertilization treatments .

研究结果表明，连续施用有机肥将显著地改善土壤肥力，增加有机质和氮磷钾的含量，以及土壤有效态Cu、Zn、Mn、Fe的数量。

The results showed that long term applying of organic manure would increase amount of organic matter , nitrogen , phosphorus and potassium in Helu soil , as well as available Cu , Zn , Mn and Fe in the soil .

直观分析氮磷钾肥料对产量影响的效应顺序为N大于P大于K，方差分析可知氮、磷肥料因素分别达到极显著水平和显著水平，K肥料元素表现不显著。

Effects of nitrogen , phosphorus and potassium on yield effect of order n is greater than p greater than k by Intuitive analysis , Analysis of variance obtained that N , P fertilizers were highly significant factors and significant levels , K fertilizer elements is not significant .

有机肥配施NPK、磷钾及氮磷钾化肥和撂荒土壤：胡敏酸碳/腐殖酸碳比值上升，富里酸碳/腐殖酸碳比值下降；

For treatments of combing organic fertilizer with NPK and PK , NPK and abandoned land , the rate of humic acid carbon to humus acid carbon increased and opposite to rate of fulvic acid carbon to humus acid carbon .

研究结果表明：菊叶薯蓣株高、茎粗、叶片含水量和叶片叶绿素含量对氮磷钾肥料配施的响应效果均为NPK，但是各自的需求量略有差异。

The results of the study show that : the response effect of chrysanthemum leaves ' plant height , stem diameter , leaf water content and the chlorophyll content to NPK fertilizers is NPK , but their demand vary slightly .

以彩色甜椒为试验材料，采用311-A最优混合设计，研究氮磷钾对彩色甜椒品质的效应。

We researched the effects of N , P and K on quality of sweet Pepper by means of the " 311-A " optimization compound design .

100个土样（0～30cm土层）分析测试结果表明，平和琯溪蜜柚果园土壤酸性较强，有机质含量偏低；速效氮磷钾含量较丰富。

The test results of 100 soil samples taken within 0-30 cm soil layer indicated that the soil in Guanxi pomelo garden has higher acidity and lower organic matter , but its contents of the available N , P , K are abundant .

紫色土施氮磷钾对棉花纤维品质的影响

Effect of NPK fertilized on cotton fiber quality in purple soils

甘肃省农田氮磷钾养分平衡状况探析

Farmland nutrient balance of nitrogen , phosphorus and potassium in Gansu

油菜氮磷钾元素的需肥规律和施肥研究

Study on Nutritional Character of Rape and Potassium Fertilizer Application Effect

芋对氮磷钾吸收分配规律的研究

Absorption and distribution of nitrogen , phosphorus and potassium in taro

天鹰椒氮磷钾高产施肥模型研究

Study on NPK application model of high yield for cluster red pepper

玉米喜肥等级及其氮磷钾平衡调控技术研究

Fertilizer-Liking Grade of Maize and Its Balanced Control for NPK

生姜氮磷钾平衡施肥技术研究

Effect of Balanced Fertilization of Nitrogen , Phosphorus and Potassium on Ginger

花生（花育16）地膜覆盖栽培氮磷钾的吸收特性

Assimilation Characteristics of Nitrogen , Phosphorus and Potassium in Plastic Film-cultivated Peanut

菜园土壤氮磷钾硫养分状况的研究

Studies on nitrogen phosphorus potassium and sulphur fertilizer status of vegetable soil

高产春大豆氮磷钾吸收分配规律研究

Nitrogen , Phosphorous , Potassium Absorption and Distribution Disciplines of High-yield Spring Soybean

高原玉米吸收氮磷钾规律的研究

Study on the Pattern of Plateau-corn in Absorbing Nitrogen , Phosphorus and Potassium

土壤速效氮磷钾测定进展

Progress in Soil Available Nitrogen , Phosphorus and Potassium Analysis : A Review

楚雄州几种主要土壤烟草氮磷钾施肥模型

NPK application models for flue-cured tobacco in several major soils of Chuxiong Prefecture

产品的氮磷钾利用率较高。

Malabar spinach had high utilization efficiency of nitrogen , phosphorus and potassium .

杂交稻高产群体的氮磷钾素积累运转

Studies on the NPK Accumulation and Transfer in High Yielding Colony of Hybrid Rice