CAJ | 학술논문

通过不同养分管理条件下的对比试验,揭示不同氮肥用量对苹果树产量和品质的影响,同时分析了苹果园养分平衡状况.结果表明,不同氮肥处理对单果质量和硬度的影响较大.年周期内0～60 cm土层无机氮的分布由前期随土层深度增加而降低,转变为后期的随深度增加而增加.通过对苹果园养分平衡的计算,果园氮磷钾都存在不同程度的盈余,主要是因为,投入量大而带走量有限.高产园和传统处理钾素都接近平衡,分别盈余16 kg/hm~2和亏缺2 kg/hm~2,但高产园是高投入高产出下的平衡,传统处理是是低投入低产出下的平衡.
통과불동양분관리조건하적대비시험,게시불동담비용량대평과수산량화품질적영향,동시분석료평과완양분평형상황.결과표명,불동담비처리대단과질량화경도적영향교대.년주기내0～60 cm토층무궤담적분포유전기수토층심도증가이강저,전변위후기적수심도증가이증가.통과대평과완양분평형적계산,과완담린갑도존재불동정도적영여,주요시인위,투입량대이대주량유한.고산완화전통처리갑소도접근평형,분별영여16 kg/hm~2화우결2 kg/hm~2,단고산완시고투입고산출하적평형,전통처리시시저투입저산출하적평형.
A field expertiment was conducted to study the yield and quanlity of the apple in the different nitrogen feitilizer rates and the nutrient equilibrium.The result indicated nitrogen rates have a siginificant influence to single fruit weight and firmness. The available nitrogen of 20～40 cm changed intensely in the growth cycle. At the beginning of the year Nmin was decreasing with the layer increasing, but Nmin was increasing with the layer increasing at the last stage. Nutrient balance showed there were surplus N,P,K in apple orchard in all treatments,because input of the fertilizer was high but the output was low. K was close to balance in the treatments of high yield orchard and tradition, only surplus 16 kg/hm~2 and -2 kg/hm~2. The balance in the treatments of high yield orchard was high input and high output, but in tradition treatment was low input and low output.