保水剂不同施用深度对玉米产量及土壤水分利用效率的影响
为提高吉林省西部半干旱区淡黑钙土壤的抗旱保水能力，利用pvc管栽进行保水剂施用深度筛选试验。3个供试保水剂品种为MP3005KB、US和XM，每个品种4个施用层次，分别为土表下10cm、20cm、30cm和40cm，以不施保水剂为对照。探讨不同保水剂及施用深度对玉米产量性状及土壤水分利用效率的影响，以确定最佳施用深度。试验结果表明，保水剂MP3005KB施在30-40cm, 而US和XM施在20-40cm玉米产量和土壤水分利用效率均极显著高于同品种的其它处理和对照。由此得出，保水剂施在土壤中30-40cm效果最佳。
英文摘要:
In order to improve the ability of drought resistance and water retention of light black calcium soil in semi arid region of the west of Jilin province, using the PVC pipe, the water retaining agent depth screening test for application was done . There were three kinds of water-retaining varieties were used, they were MP3005KB, US and XM. application four levels for each, They were 10cm, 20cm,30cm and 40cm from soil surface, with no water-retaining agent application as the control.Discussion the effects of the depth of water-retaining agent application on corn yield traits and Water Use Efficiency, in order to determine the optimal depth of application. The test results show that the corn yield and soil WUE were significant higher than those of the other treatments and control of water-retaining agent MP3005KB was applied in 30-40cm, and US and XM were in 20-40cm. So water retaining agent in soil 30-40cm is best.
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