CAJ | 학술논문

以鲁南地区砂姜黑土为基础,研究了新型土壤改良剂对马铃薯(Solanum tuberosum)田间土壤理化性状﹑养分状况﹑马铃薯农艺性状以及产量的影响. 结果表明,施用新型土壤改良剂能使0~20 cm土层土壤容重降低0.12 g/cm3,土壤孔隙度增加4.1%,土壤含水量提高3.1%,土壤pH提高0.53;新型土壤改良剂能使土壤有机质含量提高7.55 g/kg,土壤速效氮﹑速效磷﹑速效钾含量分别增加30.77﹑6.97﹑65.33 mg/kg;新型土壤改良剂能有效地改善马铃薯的农艺性状,增产7 335.9 kg/hm2,增幅达24.4%;增加大中薯的比率,商品率提高12.9%;施用新型土壤改良剂可减少化肥施用量25%,降低生产成本约1 050元/hm2.
이로남지구사강흑토위기출,연구료신형토양개량제대마령서(Solanum tuberosum)전간토양이화성상﹑양분상황﹑마령서농예성상이급산량적영향. 결과표명,시용신형토양개량제능사0~20 cm토층토양용중강저0.12 g/cm3,토양공극도증가4.1%,토양함수량제고3.1%,토양pH제고0.53;신형토양개량제능사토양유궤질함량제고7.55 g/kg,토양속효담﹑속효린﹑속효갑함량분별증가30.77﹑6.97﹑65.33 mg/kg;신형토양개량제능유효지개선마령서적농예성상,증산7 335.9 kg/hm2,증폭체24.4%;증가대중서적비솔,상품솔제고12.9%;시용신형토양개량제가감소화비시용량25%,강저생산성본약1 050원/hm2.
A field experiment was conducted to study the effects of new soil amendment applied to the potato(Solanum tubero-sum) planting in the lime concretion black soil of Lunan region.The results showed that the application of soil amendment could decrease the bulk density of 0~20 cm soil layer by 0.12 g/cm3,increase the soil porosity,soil moisture and pH value by 4.1%,3.1% and 0.53,respectively.The soil amendment also could contribute to improve the contents of soil organic matter by 7.55 g/kg,available nitrogen by 30.77 mg/kg,available phosphor by 6.97 mg/kg and available kalium by 65.33 mg/kg.In the meantime,the agronomic characters of potato such as plant height,fresh weight and stem thick biological base all have signifi-cant correlation.Proportionately, both the yield and commodity rate of potato also increased by 24.4% and 12.9%.However,the amount of chemical fertilizer could be reduced by 25%,and the production costs may be saved by RMB 1 050 yuan/hm2.