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在置于田间的栽培箱内，将大麦、小麦以及两种形态上截然不同的豆类品种（叶豆和半无叶豆）混作，以这些作物按标准种植密度的净作为对照，并采用隔离装置、研究这些作物混作时枝系和根系的相互作用。豆类和麦类同时播种或间隔10天。并用15N标记的氮肥为这些作物的氮源。或许由于两个豆类品种种子较大的缘故，豆类根系、枝系的竞争能力都强于大麦和小麦。叶豆的根系、枝系竞争力大于半无叶豆。豆类晚播会减小其竞争力。豆、麦间混作的相对产量总和（RYT，基于总的生物产量）是，当仅有根系相互作用时，平均为1．6；只有枝系相互作用时平均为1．4；根系的相互作用和枝系的相互作用同时存在时为1．0。豆类与小麦混作时，RYT值较豆类和大麦混作及豆、麦类同播种时为大。来自豆类的枝系竞争增加了麦类的N％，但由于麦类生物学产量的下降，其总含氮量显著减少，与麦类枝系的竞争对豆类的含氮量无影响，总含氮量也只有轻微的下降。豆、麦间的枝系竞争对各自不同来源氮的比例无显著影响。豆类的根系竞争，能显著降低麦类的N％和总含氮量。麦类的根系竞争对豆类的N％无影响，但使其总含氮显著降低，同时把来源于根瘤菌固定氮的比例从76％提高到94％。由于豆类和麦类通常利用不同氮源，因此当两者共享土壤资源时?
Barley, wheat, and two morphologically distinct leguminous cultivars (leafy beans and semi-leafless beans) were mixed together in a field box and the net of these crops as a standard planting density was compared and segregated Device to study the interaction of shoots and roots during the mixing of these crops. Beans and wheat are planted simultaneously or for 10 days. Nitrogen fertilizers labeled 15N were used as nitrogen sources for these crops. Perhaps because of the larger seeds of two legumes, legumes and branches are more competitive than barley and wheat. Leaves of the root system, the branch of the competitiveness of more than half of non-leaf beans. Soybean evening broadcasts will reduce their competitiveness. The total relative yield (RYT, based on the total biomass yield) of the intercropping of beans and wheat was 1.6 when the root interaction alone was averaged; the average was 1.4 for the branch interactions only; and the root interactions The interaction with the branches is 1.0 at the same time. When mixed with beans and wheat, the RYT value was more than that of legumes and barley, and the beans and wheat grains were larger when sowing. Competition from branches of legumes increased N% of wheat, but the total nitrogen content decreased significantly due to decreased biological yield of wheat, competition with wheat bran had no effect on the nitrogen content of legumes, Total nitrogen content also dropped only slightly. There was no significant effect on the proportion of nitrogen from different sources between the competition between the branches of beans and wheat. Root competition of legumes, can significantly reduce the wheat N% and total nitrogen content. Root competition of wheat did not affect N% of the pulses, but significantly reduced its total nitrogen content while increasing the proportion of fixed nitrogen originating from rhizobia from 76% to 94%. Because beans and wheat usually use different nitrogen sources, when both share soil resources?