CAJ | 학술논문

在东北黑土区中心-中同科学院海伦实验站进行盆栽试验,研究不同施肥处理对大豆光合产物分配的影响.设5个肥料处理,分别为无肥(CK)、氮磷(NP)、氮钾(NK),氮磷钾(NPK)和化肥有机肥配施(NPK+OM),同时进行相应肥料的无作物处理.结果发现:光合产物的分配趋势表现出分配到地上部的比例逐渐增加,由35%增加到66%,同时地下部所占有的比例相应减少,南65%降低到34%.其中分配到根中的光合产物有4%～20%通过根系呼吸而消耗.碳同化产物的分配受施肥的影响(P＜0.05).随着大厦的生长,土壤呼吸速率逐渐增加,在培养后的第77天,CK、NP、NK、NPK和NPKOM处理土壤呼吸速率达到最大值,分别为113、164、143、222、274 mg C·cm-2·h-1,然后逐渐降低,到生育末期达到最小值.不同施肥处理土壤呼吸速率存在差异,大小顺序为NPK+OM＞NPK＞NP＞NK＞CK,在整个生长季的变化范围分别为29～302,25～238,25～185,24～160 and 20～129 mg C·m-2·h-1.
재동북흑토구중심-중동과학원해륜실험참진행분재시험,연구불동시비처리대대두광합산물분배적영향.설5개비료처리,분별위무비(CK)、담린(NP)、담갑(NK),담린갑(NPK)화화비유궤비배시(NPK+OM),동시진행상응비료적무작물처리.결과발현:광합산물적분배추세표현출분배도지상부적비례축점증가,유35%증가도66%,동시지하부소점유적비례상응감소,남65%강저도34%.기중분배도근중적광합산물유4%～20%통과근계호흡이소모.탄동화산물적분배수시비적영향(P＜0.05).수착대하적생장,토양호흡속솔축점증가,재배양후적제77천,CK、NP、NK、NPK화NPKOM처리토양호흡속솔체도최대치,분별위113、164、143、222、274 mg C·cm-2·h-1,연후축점강저,도생육말기체도최소치.불동시비처리토양호흡속솔존재차이,대소순서위NPK+OM＞NPK＞NP＞NK＞CK,재정개생장계적변화범위분별위29～302,25～238,25～185,24～160 and 20～129 mg C·m-2·h-1.
Pot experiments were conducted at the Hailun Experimental Station,Chinese Academy of Sciences,in the central area of the black soil region in northeastern China.We studied the effects of five fertilizer treatments,no fertilizer(CK),fertilizer NP(NP),fertilizer NK(NK),fertilizer NPK(NPK)and fertilizer NPK plus organic manure(NPK+OM)and five unplanted treatments with five same fertilizer treatments on photosynthate partitioning of soybean.The tendency in the distribution of the photoassimilate was the increase in the proportion allocated shoot(35%-66%)at the expense of that alloc atled below-ground(65%-34%)at the growing season.The proportion 4%-20%of photoassimilates was expended by root respiration.For root respiration was a decrease in the percentage of C assimilated over the experiment.Relative C assimilated partitioning were affected by fertilization(P＜0.05).Soil respiration rates increased and reached a maximum at CK、NP、NK、soybean growing then declined and reach a minimum at the end of growing stage.Soil respiration rates differed among treatments in the soybean-planted soil,and decreased in an order:NPK+OM＞NPK＞NP＞NK＞CK,ranging 29-302,