摘要
为了解甘蔗产区土壤养分状况，并根据养分丰缺情况进行合理科学的施肥，最终实现甘蔗高产高糖，对云南省镇康蔗区采集的481份土壤样品进行养分测定。结果表明，镇康蔗区49．27％的是酸性土壤，pH值在4．5～5．5；有机质平均含量3．04％，中上水平；全氮含量平均0．15%，中上水平；碱解氮含量高，平均132．70mg／kg；全磷含量低，平均0．07％；有效磷含量极低，平均9．26mg／kg；全钾含量低，平均1．37％；速效钾含量中上水平，平均168．53mg／kg；微量元素有效锌缺乏，82．18％的含量低于1．5mg／kg；85％以上的土壤样品有效锰、有效铁和有效铜都高于临界值，不缺乏。根据土壤养分分析结果，在镇康蔗区建议有机肥结合速效氮磷钾复合肥施用，有利于甘蔗的高产高糖。
According to soil nutrient abundance and deficiency conditions, we carried out scientific and reasonable fertilization to sugarcane, and then sugarcane can ultimately achieve higher yield and sugar. Nutrients of 481 soil samples from Zhenkang County, Lincang Region, Yunnan Province were tested. The result indicated that most of soil samples were of slight acidity, the pH value of 49.27 % samples were between 4.5 and 5.5, the average SOM reached to 3.04 % on average, the total N was extremely high with a average value 0. 15 %, avail- able N was high with a average value 132.70 mg/kg, the total P and available P were low with average value 0.07 % and 9.26 mg/kg respectively, the total K with a average value was 1.37 %, available K was medium with a average value 168.53 mg/kg, Zn content of soil was available which 82.18 % was lower than 1.5 mg/kg. 85 % samples of available Mn, Fe and Cu were more than their critical value respectively indicated there were not Mn, Fe and Cu deficit among soil samples. According to results, the fertilizing way that organic fertilizer and compound fertilizer with available N, P and K were fertilized together in Zhenkang cane region should be applied in order to get more cane and sugar yield.
出处
《西南农业学报》
CSCD
北大核心
2013年第6期2391-2396,共6页
Southwest China Journal of Agricultural Sciences
基金
国家甘蔗产业技术体系"现代农业甘蔗产业技术体系"(CARS-20-3-4)
云南省现代农业甘蔗产业技术体系
科技支撑"循环农业科技工程"(2012BAD14B18-04)
关键词
甘蔗
甘蔗产区
土壤养分
对策
Sugarcane
Sugarcane Field
Soil nutrients
Measure
