CAJ | 학술논문

以粳型水稻品系2645为材料,设全年还田(水稻秸秆全量还田+小麦秸秆全量还田)(A)、当季还田(水稻秸秆不还田+小麦秸秆全量还田)(B)、对照(水稻秸秆不还田+小麦秸秆不还田)(C)、隔季还田(水稻秸秆全量还田+小麦秸秆不还田)(D)4个处理,研究秸秆还田对水稻产量和稻田土壤培肥的影响。结果表明：秸秆还田处理增加了穗粒数,提高了产量,增产幅度达到3.0%~9.9%。全年还田和当季还田处理降低了土壤的 p H值,降低了7.4%~8.8%；经过一年的种植,土壤中的P2 O5和 K2 O 含量都有一定的下降趋势,秸秆还田处理可以缓解下降幅度。但与对照相比,全年还田和当季还田处理使土壤有机质含量、土壤全氮含量分别提高了1.8%~5.8%和8.3%~11.2%,N H+4-N、速效钾和速效磷的含量分别增加3.7%~4.2%、25.3%~26.9%和4.1%~4.7%；秸秆对土壤培肥的作用顺序为 A>B>D>C ,受还田季数影响明显。
이갱형수도품계2645위재료,설전년환전(수도갈간전량환전+소맥갈간전량환전)(A)、당계환전(수도갈간불환전+소맥갈간전량환전)(B)、대조(수도갈간불환전+소맥갈간불환전)(C)、격계환전(수도갈간전량환전+소맥갈간불환전)(D)4개처리,연구갈간환전대수도산량화도전토양배비적영향。결과표명：갈간환전처리증가료수립수,제고료산량,증산폭도체도3.0%~9.9%。전년환전화당계환전처리강저료토양적 p H치,강저료7.4%~8.8%；경과일년적충식,토양중적P2 O5화 K2 O 함량도유일정적하강추세,갈간환전처리가이완해하강폭도。단여대조상비,전년환전화당계환전처리사토양유궤질함량、토양전담함량분별제고료1.8%~5.8%화8.3%~11.2%,N H+4-N、속효갑화속효린적함량분별증가3.7%~4.2%、25.3%~26.9%화4.1%~4.7%；갈간대토양배비적작용순서위 A>B>D>C ,수환전계수영향명현。
A japonica rice cultivar 2645 is used and 4 treatments,including the application of all the straw harvested(A),the wheat crop straw harvested(B),non straw harvested(C)and the rice crop straw harvested(D)are designed to study the effects of all wheat-crop-straw-applica-tion on rice growth and soil fertility in rice fields.The results show that all wheat-crop-straw-application have increased spikelets per panicle and grain yield by 3.0%~9.9%.A and B reduce the soil pH by 7.4%~8.8%;after 1 years of planting,P2 O5 and K2 O in the soil have a certain decline.Straw application can alleviate the decline.Compared with CK,the soil organic matter content and the soil total nitrogen content of A and B have increased by 1.8%~5.8% and 8.3%~11.2%,conetnt of NH+4-N,available K and awailable P have also increased by 3.7%~4.2%,25.3%~26.9%,and 4.1%~4.7%.The effect of all straw application on soil fertility is ranked as A> B > D > C,which is subj ected to field season.