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The nitrogen and potassium uptake characters of zhongyou 752 were studied. 摘要对超级稻中优752的氮、钾吸收特性进行了研究。
The results showed that: two uptake peaks of nitrogen and potassium appeared at the tilling and booting stages. 结果表明，中优752在整个生育期中均有2个吸氮、吸钾高峰期，分别是分蘖盛期和孕穗期，分别占总吸氮量的41.;71%25、35
Pot experiment was conducted to study the effects of nitrogen and potassium on the yield, quality and physiology indices of garden sass. 在盆栽试验条件下 ;研究了氮肥不同用量和氮、钾配施对大青菜产量、品质和生理指标的影响 .
The disease investigation of tall fescue turfgrass was studied under different nitrogen and potassium application treatments in the field. 摘要在大田条件下，研究高羊茅施用氮、钾肥对夏季褐斑病发病的影响。
The experimental rusults show that total nitrogen and total phosphorus can be determined at the same time if the right amount of sodium hydrate and potassium persulfate are added. 实验结果表明,选用合适的氢氧化钠和过硫酸钾的加入量,可在同一消解液中同时测定总磷和总氮,并能克服消解液保存时间短的缺点。
Potassium sulphate,poly-hydroxy ferri-aluminium,tobacco fertilizer and compound fertilizer of nitrogen and potassium were preparated by the new process. 工艺充分利用明矾石中钾、铝、硫等有用成分，并且把铁也作为有用成分，变废为宝。
Dong A X,Hu L,Zhao M Q,Zhang X M,Zhang F S.Effect of nitrogen and potassium application on the disease of tall fescue turf under field[J].Acta Agrestia Sinica,2002,10(3):203-206. [1]董爱香;胡林;赵美琦;张新民;张福锁.;夏季施氮、钾肥对高羊茅褐斑病的影响[J]
Farmers think that using more nitrogen and potassium fertiliser will produce higher yields and this only leads to problems such as water pollution and hardening of the soil. 农民以为施用了更多的氮肥钾肥就可以得到更高的产量，这才带来了水体的污染、土壤的板结等问题。
The quantity of xylem sap of grafted melon was more than own-root. The absorption capabilities of nitrogen and potassium were higher, but lower for phosphorus than the control. ZT, GAs and ABA concentrations in xylem sap were lower than own-root plant. 伤流液中玉米素(ZT)、赤霉素(GAs)和脱落酸(ABA)的浓度均低于自根植株,但ZT和GA的含量高于自根苗,而ABA的含量低于自根苗。
Xiao J X,Zhou G S,Tang L et al.Effects of nitrogen and potassium nutrition on Blumeria graminis (DC).Speer of wheat in wheat and faba bean intercropping[J].Plant Nutr.Fert.Sci.,2006,12(4):517-522. [5]肖靖秀;周桂夙;汤利;等.;小麦蚕豆间作条件下小麦的氮钾营养对小麦白粉病的影响[J]
To protect Bupleurum chinense against Root Rot,more phosphorous fertilizer,certain nitrogen and potassium fertilizer should be applied in early elongation stage in the second growing year. 从预防柴胡根腐病的角度,在第二年拔节前应多施磷肥,适量施用氮钾肥。
There are a promoting action that potassium to absorption of nitrogen in sugar beet, namely cooperating application of nitrogen and potassium was useful to form of sugar beet output. 各器管的绝对含钾量均随施钾量的增加而提高。钾对氮的吸收有促进作用，即氮与钾配合施用有利于产量的形成。
Nitrogen, phosphate and potassium were main nutrients studied. 氮、磷、钾是研究的主要养分。
nitrogen and potassium combined application 氮钾配施
nitrogen and potassium fertilizers 氮钾肥料
Different nitrogen and potassium levels 氮钾处理
Nitrogen and potassium fertilizer 氮钾肥
It was also found that the nitrogen and phospho... 与主要作物相比,水葫芦对氮与磷素营养的吸收能力较强。
The key pollution indicators are ammonia nitrogen and BOD. 主要污染指标是氨氮和生化需氧量。
Gunpowder is composed of sulfur, carbon, and potassium nitrate. 火药是由硫、碳和硝酸钾组成。