枸杞氮肥施用量试验初报

种植枸杞是宁夏固原市原州区清水河流域农民的主要经济收入来源。近几年,随着枸杞价格的不断上涨,农民盲目的大量施用氮肥,造成不必要的浪费。通过枸杞氮肥施用量试验得出：枸杞在配合施用磷、钾肥的情况下,氮肥达到一定量时增产效果最好;该试验结果在原州区北部川水地枸杞生产中,在土壤中等肥力,生育期间最少有4次以上灌水条件的地块,667m2施氮45kg、配合施用磷30kg、钾30kg时产量达375.0kg,比对照（不施肥）增产50kg,增产15.3%;而667m2施氮60kg时产量下降。可见,随着施氮量的增加,枸杞产量有明显的增产效果,当667m2施氮量达到60kg时,产量反而下降。

Study on the Application Rate of Nitrogen Fertilizer on Chinese Wolfberry

The Chinese matrimony-vine is the Ningxia Guyuan original state area Qingshui river basin farmer＇s major economic income. In recent years along with the Chinese matrimony-vine price＇s unceasing rise,farmer＇s blind massive applied nitrogen, creates the nonessential waste.Through the Chinese matrimony-vine nitrogenous fertilizer employment quantity experiment, obtains the Chinese matrimony-vine in the coordinate employment phosphorus, in the potassium fertilizer situation,the nitrogenous fertilizer achieves when the ration increases production the effect to be best;This test result, north the original state area in the Sichuan water Chinese matrimony-vine production,in the soil medium fertility,the period of duration most little has four above times irrigates the condition the land parcel,667m2 executes nitrogen 45kg,when coordinate employment phosphorus 30kg,potassium 30kg the output reaches 375.0kg,（does not apply fertilizer） compared to the comparison increases production 50kg/667m2,increases production 15.3%. But 667m2 executes time nitrogen 60kg decline of production.Obviously,along with Shi Danliang increase,the Chinese matrimony-vine output has the ohvious production increase effect,when achieves 60 kilogram / 667m2,the output instead drops.