CAJ | 학술논문

采用人工控制条件下的防雨棚土柱栽培试验,以不同抗旱类型花生品种为材料,设置充分灌水和中度干旱胁迫处理,对苗期、花针期、结荚期、饱果期和成熟期(播种后30d、50d、75d、103d 和132d)5个生育时期地上部不同器官和根系物质积累的影响进行了研究。结果表明,随生育期的进行,除花育22号在全生育期干旱胁迫条件下呈渐升趋势至成熟期最大外,花育23号和花育25号2品种根系干物质积累量均呈“抛物线型”变化趋势。干旱胁迫使花育23号根系干物质积累量峰值出现在结荚期,而花育25号峰值滞后到饱果期。3品种根重和荚果干物质积累量大小顺序均表现为：花育25号>花育22号>花育23号；通过 Logistic 方程能很好地拟合各品种地上部各器官、根系及植株生长发育情况。干旱胁迫使花育22号和花育23号两品种最大生长速率(V m )明显降低,花育25号明显升高,但3品种地上部植株物质积累最大速率出现的时间(Tm )均明显滞后；地上部叶片和茎V m 降低,Tm 延长；干旱胁迫使花生光合作用降低,光合产物积累缓慢,植株生长发育迟滞。3品种表现出对干旱胁迫适应性的差异,花育23号品种对水分较为敏感,抗旱性较差,花育25号具有较强的抗旱性。
채용인공공제조건하적방우붕토주재배시험,이불동항한류형화생품충위재료,설치충분관수화중도간한협박처리,대묘기、화침기、결협기、포과기화성숙기(파충후30d、50d、75d、103d 화132d)5개생육시기지상부불동기관화근계물질적루적영향진행료연구。결과표명,수생육기적진행,제화육22호재전생육기간한협박조건하정점승추세지성숙기최대외,화육23호화화육25호2품충근계간물질적루량균정“포물선형”변화추세。간한협박사화육23호근계간물질적루량봉치출현재결협기,이화육25호봉치체후도포과기。3품충근중화협과간물질적루량대소순서균표현위：화육25호>화육22호>화육23호；통과 Logistic 방정능흔호지의합각품충지상부각기관、근계급식주생장발육정황。간한협박사화육22호화화육23호량품충최대생장속솔(V m )명현강저,화육25호명현승고,단3품충지상부식주물질적루최대속솔출현적시간(Tm )균명현체후；지상부협편화경V m 강저,Tm 연장；간한협박사화생광합작용강저,광합산물적루완만,식주생장발육지체。3품충표현출대간한협박괄응성적차이,화육23호품충대수분교위민감,항한성교차,화육25호구유교강적항한성。
With the experiment of soil pillar culture in rain-proof shelter under manual control, and various drought-resistant peanut varieties as material, the treatments of adequate irrigation and medium drought were designed to study their effects on the matter accumulation of overground organs and root system during 5 development stages as seedling, pegging, pod setting, pod filling and mature periods (30, 50, 75, 103 and 132 days after the sowing date respectively).The results showed, as the growth periods progressing, the roots system dry matter accumulation of 2 varieties of Huayu23 and Huayu25 performed the variance of parabolic trend, while that of Huayu22 performed continuous ris-ing trend till its maximum value at mature period under the total growth period of drought stress.The peak value of dry matter accumulation of Huayu23 appeared at pod setting stage while that of Hua-yu25 delayed to mature pod filling stage.Both the root weight and pod dry matter accumulation of 3 varieties were ranked as: Huayu25 > Huayu22 > Huayu23.The development situation of overground organs, root system and plant could be perfectly simulated with Logistic equation.Drought stress could significantly decrease the maximum growth rate (Vm ) of Huayu22 and Huayu23 but significantly increase Vm of Huayu25, and the time of the overground part maximum dry matter accumulation rate (Tm ) of 3 varieties were all significantly postponed.Vm of leaves and stems was decreased and Tm of them was prolonged.Drought stress decreased the photosynthesis, slowed down the photosynthetic product accumulation and delayed the plant development of peanut.There were difference of adapta-bility to the drought stress among the 3 varieties.Huayu23 showed relatively sensitive to moisture and poor resistance to drought, while Huayu25 had relatively strong resistance to drought.