摘要
丘陵耕地是辽西地区典型的耕地类型,辽西地区坡耕地分布较广,约占全部耕地的77%。试验对不同坡度、不同坡向、不同茬口进行了墒情监测,结果表明,在同一坡向不同坡度时,土壤含水量由高到低依次为坡下>坡中>坡上,其中,坡上与坡下差异呈显著水平;同一坡度不同坡向时,土壤含水量由高到低依次为阴坡>阳坡,但差异不显著;同一坡度坡向不同茬口时,土壤含水量由高到低依次为谷子>高粱>玉米,其在0～15 cm土层内差异不显著,在15～40 cm土层内差异显著。该地区秋季墒情已达到了春播时的要求,因此,秋季采取保墒措施是完全可行的。
Hilly farmland is the typical type of arable land in the western Liaoning province. Sloping arable land is distributed widely over western Liaoning, accounting for 77 percent of all arable land. The moisture content monitoring results at various slopes, slope directions and plant stubbles indicated that, the sequence of soil water content under the same slope direction is： upper 〉 middle 〉 lower, in which the difference between the upper and lower slopes reached prominent level; at the same slope, the sequence of soil water content is the sunny slope 〉 shady slope, but there were no significant difference; the soil moisture under the same slope direction and slope was millet 〉 sorghum 〉 corn, and the differences between them were not so significant at the depth of 0 ~ 15 era, but significant at the depth of 15 - 40 cm. The soil water content in autumn could meet the need of spring sowing, so taking measures of soil moisture improvement is feasible in autumn.
出处
《山西农业科学》
2012年第9期958-960,969,共4页
Journal of Shanxi Agricultural Sciences
基金
北方主要作物抗旱节水综合技术研究与区域示范项目(200903007-6)
关键词
辽西
坡耕地
坡度
坡向
茬口
土壤墒情
western Liaoning
slope farmland
slope
slope-direction
stubble
soil-moisture
