CAJ | 학술논문

在旱地设置旋耕（ CK）、旋耕还田（ RS）、免耕还田（ NS）、深松还田（ SS）和深耕还田（ DS）5个处理，研究了不同处理对小麦花后旗叶光合速率、气孔导度、胞间CO2浓度等光合特性及产量的影响。结果表明，由于秸秆还田对土壤及水分环境的改变，小麦旗叶光合特性总效应为秸秆还田大于不还田。不同的秸秆还田模式光合特性表现为SS＞NS＞DS＞RS，秸秆还田尤其减缓了灌浆中后期叶绿素的降解。秸秆还田在不同程度上降低了小麦出苗率，SS处理和NS处理出苗率最低，分别比CK低21．25％和16．5％，穗数较低，但由于光合能力较强，千粒质量最高，穗粒数也高于其他处理，SS处理产量显著高于其他还田处理，综合本试验结果，在旱地推荐深松还田的耕作模式。
재한지설치선경（ CK）、선경환전（ RS）、면경환전（ NS）、심송환전（ SS）화심경환전（ DS）5개처리，연구료불동처리대소맥화후기협광합속솔、기공도도、포간CO2농도등광합특성급산량적영향。결과표명，유우갈간환전대토양급수분배경적개변，소맥기협광합특성총효응위갈간환전대우불환전。불동적갈간환전모식광합특성표현위SS＞NS＞DS＞RS，갈간환전우기감완료관장중후기협록소적강해。갈간환전재불동정도상강저료소맥출묘솔，SS처리화NS처리출묘솔최저，분별비CK저21．25％화16．5％，수수교저，단유우광합능력교강，천립질량최고，수립수야고우기타처리，SS처리산량현저고우기타환전처리，종합본시험결과，재한지추천심송환전적경작모식。
The photosynthetic rate , stomata conductance , intercellular CO 2 concentration , yield and some other photosynthetic characteristics were studied under five treatments of winter wheat in dryland .The five treatments are rotary tillage without straw return(CK),rotary tillage with straw(RS),no-tillage with straw(NS),subsoil tillage with straw(SS),deep plowing tillage with straw(DS).The result showed that all the photosynthetic characteristics in flag leaf of tillage with straw return was greater than the tillage without straw return ,this is due to the different soil moisture condition under tillage with straw return .The photosynthetic characteristics of tillage with straw return showed as SS>NS>DS>RS,tillage with straw return in particularly slowing down the degradation of chlorophyll at later grain filling stage .Tillage with straw return reduced the emergence rate and spike number ,emergence rate of SS and NS reduced 21.25%and 16.5%compared with CK treatment .The yield,1000-grain weight and Grains per spike of SS were much higher than the other treatments because of the higher photosynthetic rate .Integrated results of this trial ,the SS treatment was recommended in dryland .