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对宁夏回族自治区银川市兴庆区不同耕种年限的设施蔬菜中的土壤养分进行了研究,分析得出其变化规律。结果表明,设施蔬菜的土壤有机质含量高于露天菜地,随耕种年限增长呈上升趋势;但6~9年棚有机质含量有所下降;碱解氮含量高于露天菜地,随棚龄增加,3~6年棚碱解氮含量增加,6~9年则无明显相关性;有效磷含量大于露天菜地,与棚龄无确定关系;有效钾含量大于露天菜地,3~6年棚随种植年限增加有效钾含量无确定关系,6~9年则有下降趋势;全氮含量高于露天菜地,3~6年棚全氮含量增加,6~9年棚全氮含量则无确定关系。
This paper studied the soil nutrient in the vegetable of different cultivation years in Xingqing District of Yinchuan City, Ningxia Hui Autonomous Region, and analyzed its changing law. The results showed that the content of soil organic matter in vegetable was higher than that in open field, and the soil organic matter content increased with the increase of farming years. However, the content of organic matter decreased from 6 to 9 years. There was no significant correlation between alkali-hydrolyzable nitrogen content during 3 ~ 6 years and 6 ~ 9 years; available phosphorus content was greater than that of open vegetable fields, There is no definite relationship between the increase of planting years and the increase of available potassium content, and the decrease of 6 ~ 9 years. The content of total nitrogen is higher than that of open vegetable fields. The content of total nitrogen increased from 3 to 6 years. .