CAJ | 학술논문

2013年7-10月进行复播大豆滴灌量的田间试验，以研究不同滴灌量（3000、3600、4200和4800m3?hm?2，分别用W1、W2、W3、W4表示）对复播大豆冠层透光率、温度、空气相对湿度及光合特性的影响。结果表明：（1）在开花期和结荚期，大豆群体冠层不同层次的透光率均随着滴灌量的增加而减小，并均以距地面20cm处的透光率最小，且各处理群体冠层透光率均与株高呈极显著负相关关系（R=-0.98，P＜0.01）。（2）随着滴灌量的增加，大豆群体内部距地面40cm 处冠层的空气温度降低而湿度增加，且温度与湿度呈相反的日变化趋势。（3）开花期和结荚期，复播大豆叶片净光合速率（Pn）、蒸腾速率（Tr）、气孔导度（Gs）和气孔限制值（Ls）均随着滴灌量的增加呈“先增后降”的变化趋势，均以W3处理最高。（4）大豆产量也以W3处理最高，为3741.23kg?hm?2，分别较W1、W2和W4处理增产30.42%、13.98%和8.44%，且达显著差异水平（P＜0.05）；灌溉水利用效率（IWUE）随着灌水量的增加而降低。本试验条件下，滴灌量为4200m3?hm?2(W3)时复播大豆群体生态环境较好，光合效率最高，达到了高产和节水的统一。
2013년7-10월진행복파대두적관량적전간시험，이연구불동적관량（3000、3600、4200화4800m3?hm?2，분별용W1、W2、W3、W4표시）대복파대두관층투광솔、온도、공기상대습도급광합특성적영향。결과표명：（1）재개화기화결협기，대두군체관층불동층차적투광솔균수착적관량적증가이감소，병균이거지면20cm처적투광솔최소，차각처리군체관층투광솔균여주고정겁현저부상관관계（R=-0.98，P＜0.01）。（2）수착적관량적증가，대두군체내부거지면40cm 처관층적공기온도강저이습도증가，차온도여습도정상반적일변화추세。（3）개화기화결협기，복파대두협편정광합속솔（Pn）、증등속솔（Tr）、기공도도（Gs）화기공한제치（Ls）균수착적관량적증가정“선증후강”적변화추세，균이W3처리최고。（4）대두산량야이W3처리최고，위3741.23kg?hm?2，분별교W1、W2화W4처리증산30.42%、13.98%화8.44%，차체현저차이수평（P＜0.05）；관개수이용효솔（IWUE）수착관수량적증가이강저。본시험조건하，적관량위4200m3?hm?2(W3)시복파대두군체생태배경교호，광합효솔최고，체도료고산화절수적통일。
The impacts of different drip irrigation amount on physiological characteristics of summer soybean and its filed micro-climate were studied from July to October in 2013, with radomized block design method. Four treatments were conducted in this field experiment, which were named as W1 (3000m3·ha?1), W2 (3600m3·ha?1), W3 (4200m3·ha?1), W4 (4800m3·ha?1), respectively. The results showed that the different levers of transmittance were decreased significantly with the increasing of drip irrigation amount at flowering stage and podding stage, with the minimum value at 20cm from bottom of summer soybean in different treatments. Furthermore, there was a significant negative correlation(R=-0.98, P<0.01)between plant height and population transmittance. The relative humidity inside canopy at 40cm height increased while canopy temperature decreased with the irrigation amount increasing, and the tend of the daily variation of temperature and humidity was conversely. The net photosynthetic rate (Pn), transpiration rate (Tr), stomatal conductance (Gs) and stomatal limitation (Ls) increased shortly and then decreased with the irrigation amount increasing at flowering stage and podding stage. The treatment W3 had the highest yield of 3741.23kg·ha?1, which was higher 30.42%, 13.98% and 8.44% than treatment W1, W2 and W4 with a significant difference in level P<0.05. The irrigation water use efficiency decreased with the irrigation amount increasing. There was no significant difference between treatment W1, W2 and W3, but W3 was the best choice for summer soybean in local natural condition, with the better population ecological environment, high photosynthetic efficiency, and high yield.