广东省花生测土配方施肥钾素指标体系研究  

Research of Potassium in Formula Fertilization by Soil Testing Index System for Peanut in Guangdong

作　　者：于俊红[1] 张桥 张育灿 林日强 徐培智[1] 彭智平[1] 黄继川[1] 

机构地区：[1]广东省农业科学院农业资源与环境研究所/农业部南方植物营养与肥料重点实验室,广州510640 [2]广东省耕地肥料总站,广州510500

出　　处：《中国农学通报》2014年第30期106-110,共5页Chinese Agricultural Science Bulletin

基　　金：广东省农用地测土配方施肥补贴项目"花生施肥指标体系建设"(粤财农[2012]407号)

摘　　要：为指导当地花生施肥,广东省在2008—2013年开展了花生＂3414＂田间肥效试验研究花生施肥效应及对产量的影响。根据肥效试验结果进行统计分析,建立了广东省花生种植土壤速效钾丰缺指标的数学模型：y=15.486lnx＋19.745,r=0.701＊＊;土壤速效钾含量与推荐施钾（K2O）量的数学模型y=-0.6357x＋155.24,r=-0.531＊＊。根据数学模型确定土壤速效钾丰缺范围分为〈20 mg/kg、20-35 mg/kg、35-70 mg/kg、70-130 mg/kg、〉130 mg/kg 5个等级,对应的每公顷推荐施钾（K2O）量为142.5 kg、135.0-142.5 kg、112.5-135.0 kg、75.0-112.5 kg和75.0 kg。This article discussed the fertilizer response in 3414 fertilizer experiments on peanut in Guangdong Province in recent years. The index system of soil available potassium abundance of Guangdong peanut was established by analyzing the relative yield. Results showed that, the equation for soil available potassium content was y=15.4861nx＋ 19.745 （1=0.701）; the equation of the recommended potassium content was y=- 0.6357x＋ 155.24 （r=-0.531）. According to the mathematical model the sufficiency and deficiency range of the soil available potassium were divided into 5 levels： 〈20 and 〉130 mg/kg, and the proposed index of potassium 112.5-135.0 kg/hm2, 75.0-112.5 kg/hm2 and 75.0 kg/hm mg/kg, 20-35 mg/kg, 35-70 mg/kg, 70-130 mg/kg application were 142.5 kg/hm2, 135.0-142.5 kg/hmz, 2 respectively.

关 键 词：测土配方施肥 花生 养分丰缺指标 钾 

分 类 号：S14-3[农业科学—肥料学]