CAJ | 학술논문

【目的】评价精准施肥的效益，为探索适合本地生产条件的精准变量施肥模型提供理论依据。【方法】本研究于2003-2006年连续进行了3年，均设20个精准施肥处理小区，同时设20个均一施肥处理的对照区，利用2003-2004年所得数据建立精准施肥模型，2004-2006两年根据该模型进行精准变量施肥，收获后对所有小区进行测产，同时对每个小区0～0．6 m的土样进行硝态氮含量的测定，利用地统计学软件（ArcGIS 10．0）对经济效益及硝态氮含量进行了空间差值分析。【结果】效益最高的小区都出现在精准施肥区，经济效益最低的小区均出现在对照区，硝态氮的空间差值则表明，土壤中硝态氮残留最低的小区均出现在精准施肥区，而残留量最高的小区都出现在对照区。【结论】通过3年的试验，证明了利用SPAD值进行的精准施肥具有稳定性和可靠性。
【목적】평개정준시비적효익，위탐색괄합본지생산조건적정준변량시비모형제공이론의거。【방법】본연구우2003-2006년련속진행료3년，균설20개정준시비처리소구，동시설20개균일시비처리적대조구，이용2003-2004년소득수거건립정준시비모형，2004-2006량년근거해모형진행정준변량시비，수획후대소유소구진행측산，동시대매개소구0～0．6 m적토양진행초태담함량적측정，이용지통계학연건（ArcGIS 10．0）대경제효익급초태담함량진행료공간차치분석。【결과】효익최고적소구도출현재정준시비구，경제효익최저적소구균출현재대조구，초태담적공간차치칙표명，토양중초태담잔류최저적소구균출현재정준시비구，이잔류량최고적소구도출현재대조구。【결론】통과3년적시험，증명료이용SPAD치진행적정준시비구유은정성화가고성。
Objective]To evaluate the benefit of precision fertilization,and to provide a theoretical basis for precision variable fertilization model suitable for local production conditions.[Method]Field experiments were conducted during the three wheat growth duration stages from year 2003 to year 2006 by 20 precise fertilization area,and 20 uniform fertilization control area,By the es-tablishment of precision fertilization model obtained from the data of 2003-2004,variable fertili-zation was conducted in 2004-2006 ,according to the model.Tthe yield of all the plots were mo-nitored after harvest,and the content of nitrate nitrogen were tested for each soil sample of 0-0. 6 m.Geostatistics software (ArcGIS 10)was used to analyze the economic benefit and the con-tent of nitrate nitrogen by space difference.[Results]The highest benefit plot appeared in preci-sion fertilization area,and the lowest cell was found in the control area,The spatial difference of nitrate nitrogen indicates that the minimum area of nitrate nitrogen residue in soil appeared in pre-cision fertilization area,and the highest cell residues appear in the control area.[Conclusion]Through three years trials,it was proved that precision fertilization value using SPAD has stabili-ty and reliability.