CAJ | 학술논문

选取我国南方套作模式下20个不同产量水平的大豆品种(系)，于2013—2014年采用净作和遮阴(遮阳网或玉米)对比分析了高产和低产大豆品种在荫蔽期及复光期的生长特点。结果表明，荫蔽期间，茎叶干物重显著低于净作，分配规律表现为“茎多叶少”，分别为58.4%和41.6%；与高产类型大豆相比，低产类型茎叶干重下降比例、茎长、茎长/茎粗、茎长/地上部干物质、茎长/叶面积显著增加；荫蔽期地上部干物质与产量呈显著正相关，茎干物质比例与产量呈显著负相关。光照恢复后，地上部干物质迅速增加，分配规律表现为“茎少叶多”，复光后30 d分别为47.7%和52.3%；高产类型地上部干物质、叶面积、叶干重比例、茎粗均显著大于低产类型，茎长/茎粗、茎长/地上部干物质、茎长/叶面积均显著小于低产类型；地上部干物质、叶面积、茎粗、叶干物质比例与产量呈显著正相关，茎长/茎粗、茎长/地上部干物质、茎长/叶面积与产量呈极显著负相关。通过复光前后生长性状与产量的回归分析，复光后30 d的叶干物质比例、茎长/地上部干物质、茎粗可作为预测套作大豆产量的主要指标。上述结果表明，选择荫蔽期茎长较短、地上部干物质较大、叶面积更大，光照恢复期茎粗较大、叶干物质比例较大、茎长/地上部干物质较小的大豆品种可以在套作下获得高产。
선취아국남방투작모식하20개불동산량수평적대두품충(계)，우2013—2014년채용정작화차음(차양망혹옥미)대비분석료고산화저산대두품충재음폐기급복광기적생장특점。결과표명，음폐기간，경협간물중현저저우정작，분배규률표현위“경다협소”，분별위58.4%화41.6%；여고산류형대두상비，저산류형경협간중하강비례、경장、경장/경조、경장/지상부간물질、경장/협면적현저증가；음폐기지상부간물질여산량정현저정상관，경간물질비례여산량정현저부상관。광조회복후，지상부간물질신속증가，분배규률표현위“경소협다”，복광후30 d분별위47.7%화52.3%；고산류형지상부간물질、협면적、협간중비례、경조균현저대우저산류형，경장/경조、경장/지상부간물질、경장/협면적균현저소우저산류형；지상부간물질、협면적、경조、협간물질비례여산량정현저정상관，경장/경조、경장/지상부간물질、경장/협면적여산량정겁현저부상관。통과복광전후생장성상여산량적회귀분석，복광후30 d적협간물질비례、경장/지상부간물질、경조가작위예측투작대두산량적주요지표。상술결과표명，선택음폐기경장교단、지상부간물질교대、협면적경대，광조회복기경조교대、협간물질비례교대、경장/지상부간물질교소적대두품충가이재투작하획득고산。
A field experiment was conducted to compare agronomic traits during shade and light recovery periods between high yield and low yield soybean cultivars undershade net or in “maize-soybean” relay strip intercropping in 2013 and 2014. Twenty typical soybean varieties with different yield levels in relay cropping in south of China were used. The results showed that during shade period stem dry weight and leaf dry weight were significantly lower than those of control, the dry weight ratio of stem and leaf was 58.4% and 41.6% respectively under shade. Compared with the high yield soybeans, low yield cultivars had significantly higher decline rate of aboveground dry weight, stem length, stem length/ stem diameter, stem length/ aboveground dry weight, stem length/ leaf area and the yield was positively correlated with aboveground dry weight, and negatively correlated with stem weight ratio during shade period. During light recovery period, aboveground dry weight and leaf area increased rapidly, soybean showed more leaf weight ratio, stem dry weight and leaf dry weight were 47.7% and 52.3% respectively at 30 days after the re-covery of light. High yield soybeans had significantly higher aboveground dry weight, leaf area, stem diameter, leaf weight ratio and significantly smaller stem length/ stem diameter, stem length/aboveground dry weight, stem length/leaf area. In light reco-very duration, yield was positively correlated with aboveground dry weight, stem diameter, leaf area, and leaf weight ratio, and negatively correlated with stem length/ stem diameter, stem length/ aboveground dry weight. Stem length/ aboveground dry weight, stem diameter and leaf weight ratio were the three biggest variables determing yield selected by regression analysis. These results concluded that soybean cultivars with smaller stem length, larger aboveground dry weight and leaf area during shade period and smaller stem length/ aboveground dry weight, larger stem diameter and higher leaf weight ratio could obtain high yield in relay strip intercropping.