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选用4种不同窄行密植栽培模式,即宽窄密4行、宽窄密5行、小垄密和平窄密模式,配以适宜的品种,研究三个重要生殖生长期(始花期(R1)、始荚期(R3)、始粒期(R5))条件下,不同栽培模式对大豆生理指标影响,并通过测产分析不同栽培模式对大豆产量的影响。结果表明,R1-R5时期,叶面积指数、光合势和净同化率均呈现增加趋势,不同时期不同模式增加趋势不同,R1至R3时期,叶面积指数和光合势增加幅度最大的为平窄密;R3至R5时期,叶面积指数增加幅度最大的为宽窄密4行;光合势和净同化率增加幅度最大的为小垄密。四种模式中,小垄密产量极显著高于其他三种模式,其他三种模式间产量差异不显著。
Four different narrow-row planting patterns were selected, that is, the width and width of 4 rows, the width and width of 5 rows, the small ridge and the dense and narrow pattern, together with the appropriate varieties, to study the three important reproductive growth stages (R1) (R3) and initial grain-filling period (R5)), the effects of different cultivation modes on soybean physiological indices were studied. The effects of different cultivation modes on soybean yield were analyzed by field test. The results showed that the leaf area index, photosynthetic potential and net assimilation rate all showed an increasing trend in R1-R5 period, and the increasing trend was different in different periods. In R1 to R3 period, the largest increase of leaf area index and photosynthetic potential was flat and narrow ; R3 to R5 period, the largest increase in leaf area index for the width and width of 4 lines; photosynthetic potential and net assimilation rate of the largest increase for the small ridge close. Among the four modes, the yield of small ridge was significantly higher than that of the other three modes, while the output of the other three modes was not significantly different.