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利用15N同位素示踪试验结果表明间作5龄和9龄南酸枣分别竞争利用了施用于毗邻花生9.66%和30.15%的氮肥,从而促进了间作南酸枣的生长。同时,南酸枣与花生间氮素竞争对毗邻南酸枣带的花生产量下降有一定影响。
The results of 15N isotope tracing experiments showed that the intercropping of S. japonicum at the 5th and 9th instar larvae respectively competed for the application of nitrogen fertilizers at 9.66% and 30.15% of the adjacent peanut so as to promote the growth. At the same time, the competition of nitrogen between Chinese southern jujube and peanut had a certain influence on the decrease of the yield of peanut adjacent to the southern jujube belt.