CAJ | 학술논문

摘要：在重庆地区2种代表性中性紫色土上，研究有机无机复混肥对水稻产量、氮素利用率及土壤养分的影响。结果表明，施用有机——无机复混肥料提高了水稻株高、剑叶面积及穗长，降低了空壳率，以40%发酵有机——无机复混肥处理的当季水稻产量增加2.5%～10.1%，为各处理最高，氮素利用率提高17.65%，随有机N的比例增加水稻产量下降。连续两年施用有机无机复混肥，土壤速效P和有效K均有明显提高，且随着有机肥比例的增加其增幅亦增加，土壤碱解N的变化不明显。土壤阳离子交换量(CEC)的变化与磷、钾的规律相似。
적요：재중경지구2충대표성중성자색토상，연구유궤무궤복혼비대수도산량、담소이용솔급토양양분적영향。결과표명，시용유궤——무궤복혼비료제고료수도주고、검협면적급수장，강저료공각솔，이40%발효유궤——무궤복혼비처리적당계수도산량증가2.5%～10.1%，위각처리최고，담소이용솔제고17.65%，수유궤N적비례증가수도산량하강。련속량년시용유궤무궤복혼비，토양속효P화유효K균유명현제고，차수착유궤비비례적증가기증폭역증가，토양감해N적변화불명현。토양양리자교환량(CEC)적변화여린、갑적규률상사。
Organic-inorganic compound fertilizers were applied to 2 neutral purpl e soils in Chongqing to study their effects on the yield and nitrogen recovery o f the rice crop and on nutrient content in the soil. The results showed that pla nt height, flag leaf area and spike length were enhanced and the percentage of u nfilled grains decreased by the application of organic-inorganic compound fertil izers. The 40% fermented organic-inorganic fertilizer treatment appeared optimum , in which paddy grain yield increased by 2.5%～10.1% and nitrogen recovery by 17. 65%. Paddy grain yield decreased with increase in organic N in the compound fert ilizer. Application of organic-inorganic fertilizer in two successive years resu lted in marked increase in available P and K in the soil, the increase range bei ng greater as the proportion of organic N in the compound fertilizer increased. No conspicuous change in available N in the soil was observed in the study. The variation in CEC was similar to that in available P and K.