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于2014和2015年在黄土高原半干旱区全膜覆盖种植技术下,研究了不同种植密度下玉米行内间作豌豆对作物群体总产量的影响.结果表明:2014年,当玉米株距为40和50cm时,与不插播相比,在玉米株间插播2株豌豆显著提高了作物群体籽粒总产量;而在株距60 cm情况下,插播豌豆对作物群体总产量无显著影响.2015年,玉米株距40和50 cm情况下,与对应株距的单作玉米相比,在玉米株间插播2株豌豆对群体籽粒总产量无显著影响;但是在玉米株距60 cm的情况下,株间插播2株豌豆使作物群体籽粒总产量显著增加.导致两个试验年份之间玉米行内间作豌豆的产量效应差异的主要原因是生长季降水量在2014年较2015年充沛.综合比较,玉米株距40 cm、株间插播2株豌豆间作形式的籽粒总产量最高.此外,在玉米单作和行内间作中,籽粒总产量均随玉米株距的增大而减小.
The effects of pea on the total crop yield of maize plants under different planting densities were studied in 2014 and 2015 in the semi-arid region of Loess Plateau.The results showed that in 2014, when the spacing of maize plants was 40 and 50 cm , Compared with non-sowing, two pea intercropping in maize significantly increased the total grain yield of crop group; while in the case of 60 cm spacing, no significant effect of sowing pea on total crop yield was observed. In 2015, At the height of 50 cm, the total pea yield of two pea intercropping plants did not significantly affect the total grain yield of the maize plants compared with that of the single maize plant. However, with 60 cm of maize plants, The main reason for the difference in yield between the two maize intercropping peas during the two experimental years was that the precipitation in the growing season was plentiful in 2014 compared with that in 2015. Comparing maize plant spacing 40 cm and intercropping 2 The total grain yield was the highest among the intercropping strains of pea and pea.In addition, the total grain yield decreased with the increase of maize spacing in maize monocropping and intercropping.