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在黄土高原旱塬区,研究了5个间作比例下秋播燕麦(Avena sativa)/箭筈豌豆(Vicia sativa)系统的产量、叶面积指数、截光率和土壤硝态氮含量动态。结果表明,燕麦间作箭筈豌豆的适宜刈割时间在箭筈豌豆的盛花期到收获期,燕麦间作箭筈豌豆在2∶1或1∶1的比例下,群体总产量在箭筈豌豆盛花期分别比燕麦单播产量提高30%和13%,在收获期则分别提高30%和50%;总相对产量在箭筈豌豆盛花期大于收获期。燕麦间作箭筈豌豆土地利用率较燕麦单播提高了24%~69%,各间作比例下群落叶面积指数、截光率以及土壤硝态氮含量无显著差异。
In the Loess Plateau dryland, the yield, leaf area index, light cut-off rate and soil nitrate nitrogen content of Avena sativa / Vicia sativa under five interplanting treatments were studied. The results showed that the suitable cutting time between the oats for the arrow 筈 peas in the flowering stage of the arrow 筈 peas to harvest period, between the oats for the arrow 筈 peas in the ratio of 2: 1 or 1: 1, the total population in the arrow 筈 pea flowering Respectively, 30% and 13% higher than the unicast output of oats, respectively, and increased by 30% and 50% respectively at the harvesting stage. The total relative yield was higher than the harvesting time in the flowering stage of arrowhead pea. The inter-oat intercropping of arrowhead peas land use efficiency was increased by 24% -69% compared with the uni sowing of oats. There was no significant difference in the leaf area index, the light interception rate and the soil nitrate nitrogen content under the intercropping.