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为北疆麦后复播大豆高产、节水栽培提供理论依据。在大田滴灌条件下,采用单因子随机区组试验设计,研究了不同滴灌量(3 000,3 600,4 200,4 800m3/hm2,分别用W1,W2,W3,W4表示)对复播大豆耗水特性及干物质积累、转运的影响。结果表明,随着滴灌量的增加,复播大豆各生育时期0—60cm土层土壤含水量均呈增大趋势,且处理间0—40cm土层中土壤含水量差异较大,而40—60cm土层的差异较小;总耗水量增加,土壤贮水消耗量明显减少。不同处理复播大豆全生育期单株干物质均呈“S”型变化趋势;干物质最大积累速率(Vm)、快增期持续时间(Δt)及干物质总量均以W3处理最高;花前、花后的干物质转运量与籽粒产量均呈正相关关系,但花后干物质转运对产量的影响较大,各处理花后同化物转运量、转运率及对籽粒贡献率均表现为:W3>W4>W2>W1。产量以W3处理最高,达3 741.23kg/hm2,较W1,W2和W4分别高出30.42%,13.98,8.44%,差异显著(p<0.05)。各处理水分利用效率表现为:W3>W4>W2>W1;灌溉水利用效率(IWUE)在W1,W2,W3处理间差异不显著,但均显著高于W4处理。
Provide a theoretical basis for the high yielding and water-saving cultivation of soybean replanting sowing in Beijiang. Under field drip irrigation, single factor randomized block design was used to study the effects of drip irrigation (3 000, 3 600, 4 200, 48 800 m 3 / hm 2, respectively W1, W2, W3 and W4) Water Consumption Characteristics and Dry Matter Accumulation and Transportation. The results showed that with the increase of drip irrigation, the soil moisture of 0-60cm soil layer in the re-sowing soybean tended to increase, and the difference of soil water content in the 0-40cm soil layer between treatments was larger, while that of 40-60cm Soil differences are small; total water consumption increases, soil water consumption decreased significantly. The dry matter per plant of all treatments during the whole process of sowing soybean showed the trend of “S ”. The maximum dry matter accumulation rate (Vm), duration of rapid increase period (Δt) and dry matter content were the highest in W3 treatment There was a positive correlation between dry matter translocation before and after flowering and grain yield, but the post-anthesis dry matter translocation had a great effect on the yield. The translocation rate, Is: W3> W4> W2> W1. The highest yield of W3 was 3 741.23 kg / hm2, which was 30.42%, 13.98 and 8.44% higher than that of W1, W2 and W4, respectively. The difference was significant (p <0.05). WUE> W4> W2> W1. Irrigation water use efficiency (IWUE) was not significantly different between W1, W2 and W3 treatments, but significantly higher than W4 treatment.