CAJ | 학술논문

在田间试验条件下，研究了优化施肥基础上的秸秆还田与减量施肥对双季稻产量和土壤酶活性的影响。结果表明，秸秆还田下优化施肥不减量或一定程度的减氮、减磷、减钾和减氮磷钾都会对早稻产量和双季稻总产产生降低作用，而对晚稻的产量无显著的降低或提高作用。秸秆还田下优化施肥或一定程度减氮、减磷、减钾和减氮磷钾会对土壤脲酶活性产生显著的降低作用，秸秆还田下优化施肥一定程度减钾可显著提高土壤蔗糖酶的活性，秸秆还田下优化施肥一定程度减氮则会显著降低土壤纤维素酶活性。
재전간시험조건하，연구료우화시비기출상적갈간환전여감량시비대쌍계도산량화토양매활성적영향。결과표명，갈간환전하우화시비불감량혹일정정도적감담、감린、감갑화감담린갑도회대조도산량화쌍계도총산산생강저작용，이대만도적산량무현저적강저혹제고작용。갈간환전하우화시비혹일정정도감담、감린、감갑화감담린갑회대토양뇨매활성산생현저적강저작용，갈간환전하우화시비일정정도감갑가현저제고토양자당매적활성，갈간환전하우화시비일정정도감담칙회현저강저토양섬유소매활성。
The thesis studied on the output of double cropping rice and the effect of soil enzyme activity with straw returning to the field based on optimizing fertilization by field experiment. The results revealed that both optimizing fertilization without any reduction or reduction to a certain ammount of N,P,K,could reduce the output of early rice and double cropping rice, but the effect, reducing or increasing, was not ob-vious on late rice. With straw returning, soil enzyme activity,all markedly damaged urease activity. Soil enzyme activity improved soil sac-charase activity when reducing fertilizing amount of K and damaged soil cellulase activity when reducing fertilizing amount of N.