博州甜菜种植区土壤养分状况及施肥对策

近年来,对新疆博州甜菜种植区进行了一次全面的土壤养分调查,与第2次土壤普查相比,土壤中各种养分的变化趋势是:有机质普遍下降,速效磷大幅度上升,碱解氮有所增加,钾素严重亏损,微量元素中的有效锌、有效硼变化不大,但有效铁、有效铜,特别是有效锰缺乏比例大幅度上升。针对目前土壤养分的状况,通过大量的田间试验、示范,提出合理的施肥建议,调整氮、磷的比例,改进施肥方法,有针对性地补钾、补微量元素肥料,以满足甜菜作物对各种营养元素的平衡吸收。

Soil Nutrient Status and Fertilizing Countermeasures of Planting Sugarbeet in Bozhou

In recent years,the nutrient status of planting sugarbeet soil in Bozhou area of the Xinjiang autonomous region were generally investigated.The results in comparison between the two investigations showed that organic matter decreased,available P raised by big percentages,alkaline hydrolysis N slightly increased,and K greatly shortened in soil.For the microelement,available Zn was not changed,available Fe and Cu,especially available Mn was greatly decreased in soil.Therefore,fertilizing means were improved to adjust the ratio of N and P fertilizers,and to supply K and microelement fertilizers in order to meet all nutrient element demand of sugarbeet growth.