盐源县新烟区植烟土壤主要养分丰缺评价

为了研究盐源烟区土壤主要养分含量状况及植烟土壤适宜性。盐源新烟区取土壤样品30个,测定土壤主要养分含量,对植烟土壤养分状况和肥力适宜性进行直接评价。盐源烟区植烟土壤大部分酸碱度在5.2 - 7.9,烤烟能够种植； 土壤有机质含量整体较丰富； 碱解氮分布不均,变异较大,但多数区域能够满足烤烟生长需求；46.67 % 的土壤速效磷较缺乏,需要注意增施加磷肥；有50%的区域处于缺钾,平均含量为155.87 mg /kg,勉强处于中等水平,需要注意增施钾肥; 仅有13.34%的土壤钙含量处于丰富及以上水平,大部分区域均缺乏钙元素,需注意钙元素的补充。所有采样区域都处于缺镁状态,需要增加对镁元素的调控。56.67%的区域的锌水平处于中等及以下水平,需注意补充土壤锌元素。所有样品中的有效硼的含量均处于中等及以下,土壤大面积缺硼。但有66.67%的土壤硼元素处于丰富及以上水平。有86.66%的区域,氯离子含量处于缺乏及以下状态,注意补充氯元素。盐源新烟区大部分植烟土壤养分适宜适宜种烟,但需要因地制宜地补充缺乏的元素,注意平衡施肥。

Evaluation of major nutrient abundance and deficiency for tobacco planting soils in new tobacco areas of Yangyuan County

In order to study the status of soil major nutrient content and the suitability of soil for tobacco planting in Yanyuan tobacco area. Thirty soil samples were taken from the new Yanyuan tobacco area to determine the content of major soil nutrients and to directly evaluate the nutrient status and fertility suitability of tobacco planting soils. Most of the soils in Yanyuan new tobacco growing area have pH 5.2 to 7.9, and can be planted with roasted tobacco; the soil organic matter content is rich overall; the distribution of alkaline nitrogen is uneven and variable, but most of the areas can meet the needs of roasted tobacco growth; 46.67% of the soils are deficient in fast-acting phosphorus, and need attention to increase phosphorus fertilizer; 50% of the areas are deficient in potassium, with an average content of 155.87 mg/kg, which is barely adequate. Only 13.34% of the soils were rich in calcium and above, most of the soils were deficient in calcium and needed to pay attention to the supplementation of calcium. All of the sampled areas were deficient in magnesium, and need to increase the regulation of magnesium. 56.67% of the areas had moderate or low levels of zinc, and need to pay attention to the supplementation of soil zinc. The effective boron levels in all samples were at moderate and below levels, and the soil was deficient in large areas. However, 66.67% of the soils were rich in B and above. In 86.66% of the areas, the chloride ion content was at deficient and below, and attention was paid to supplementing chloride. Most of the soil nutrients in the new tobacco planting area of Yangyuan are suitable for growing tobacco, but it is necessary to supplement the deficient elements according to the local conditions and pay attention to balanced fertilization.