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通过研究深松对土壤物理性状和玉米产量的影响,探讨干旱灌区玉米不同时期深松的作用效果。于干旱灌区,对伟科702进行秋季、春季、夏季深松,深松深度为40 cm,检测玉米生长前期和不同生育时期的不同土层土壤的物理性状,测定玉米产量及产量相关性状。结果表明:采用不同时期深松对降低土壤容重、提高土壤含水量在不同生育时期、不同土层的作用表现出不同程度差异,在产量相关性状方面表现为,3个时期的深松均提高了玉米产量及千粒重、穗粒数、出籽率等,降低了秃尖和倒伏率;秋季、春季、夏季深松分别较对照增产10.4%、7.1%、3.8%。
By studying the effects of subsoiling on soil physical properties and maize yield, the effect of subsoiling on corn in different periods in irrigated area was discussed. In the arid irrigated area, we carried on the autumn, spring and summer deep weed and deep pine depth 40 cm for Weike Branch 702. The physical characters of soil in different soil layers before and during the different growth stages of maize were detected. The yield and yield-related traits of maize were determined. The results showed that the effects of subsoiling to reduce soil bulk density and soil water content at different growth stages varied with different degrees. The yield-related traits showed that the subsoiling increased in all three periods Maize yield, 1000-grain weight, grains per spike, and seed-setting rate reduced the baldness and lodging rate. The yield of autumn and spring and summer were respectively 10.4%, 7.1% and 3.8% higher than that of the control.