引用本文:黄小辉, 王玉书, 魏立本, 陈道静, 冯大兰, 张宏.梁平柚主要产区土壤养分状况及肥力评价[J].西南大学学报(自然科学版),2019,41(4):49~56
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梁平柚主要产区土壤养分状况及肥力评价
黄小辉, 王玉书, 魏立本, 陈道静, 冯大兰, 张宏1,2
1. 重庆市林业科学研究院, 重庆 400036;2. 北京林业大学 林学院, 北京 100083
摘要:
采集梁平柚主要产区土壤样品,分析土壤养分质量分数及综合肥力情况,为指导梁平柚果园合理施肥提供科学依据.结果表明:1)大部分产区土壤pH值呈微酸性或中性,基本在梁平柚生长的适宜范围内,仅大观和金带两地土壤pH值小于5,已严重偏酸;2)结合全国第二次土壤普查养分质量分数分级标准,梁平柚主要产区土壤有机质质量分数总体上处于中等及以下水平;3)土壤全氮、碱解氮、速效钾质量分数总体处于中下及更低水平,全磷、有效磷质量分数总体达到中上及更高水平;4)土壤有效态钙、镁、铁、铜、钼均处于中等及较高水平,锰、锌、硼质量分数处于中等及以下水平;5)采用改进后的内梅罗综合指数法分析得出,梁平柚主要产区土壤综合肥力均为Ⅲ级,属一般肥力水平,且有机质、氮和钾是限制其土壤肥力的主要因子.因此,建议梁平柚果园施肥偏重氮肥与钾肥,同时与有机肥、锰、锌、硼等微肥进行配施,并结合各产区实际情况,进行土壤酸碱调节,以达到培肥土壤和促进柚树生长结果的双重良好作用.
关键词:  梁平柚  土壤养分  土壤肥力  内梅罗综合指数法  评价
DOI:10.13718/j.cnki.xdzk.2019.04.007
分类号:S158
基金项目:重庆市科委社会事业与民生保障科技创新专项(现代农业)(cstc2017shms-xdny80020).
An Evaluation of Soil Nutrient Status and Fertility in the Major Producing Areas of Liangping Pomelo
HUANG Xiao-hui, WANG Yu-shu, WEI Li-ben, CHEN Dao-jing, FENG Da-lan, ZHANG Hong1,2
1. Chongqing Academy of Forestry, Chongqing 400036, China;2. Forestry College, Beijing Forestry University, Beijing 100083, China
Abstract:
In order to provide a scientific guidance for fertilizer application in Liangping pomelo orchards, soil samples in the major producing areas of Liangping pomelo were collected to analyse their nutrient content and fertility status. The results obtained were as follows. Soil pH in most pomelo-producing areas was shown to be in the desirable range for pomelo production, being slightly acidic or neutral, which could satisfy the growth of pomelo trees in Liangping, The two towns of Daguan and Jindai were the only exception, where soil was seriously acidic (pH<5). Based on the classification standard of soil nutrients in the Second National Soil Survey of China, the content of soil organic matter in the major pomelo-producing areas in Liangping was, on the whole, at a moderate level or below; the contents of total nitrogen, alkali hydrolysable nitrogen and available potassium were at a mid-low level or below; total phosphorus and available phosphorus were at a mid-high level or higher; the contents of available calcium, magnesium, iron, copper and molybdenum were all at a mid-high level or higher; and the contents of manganese, zinc and boron were at a moderate level or below. An analysis based on the improved Nemerow synthesis index method showed that the soil comprehensive fertility of the major producing areas of Liangping pomelo were all in Grade Ⅲ, which only reached general fertility level, and soil organic matter, nitrogen, and potassium were the main limiting factors of soil fertility. Accordingly, we suggest that aiming at fertilization in Liangping pomelo orchards, more nitrogenous fertilizer and potassium fertilizer should be applied in combination with organic fertilizer and micro-fertilizers (manganese, zinc and boron), and that soil pH should be adjusted based on the actual situation of each producing area so as to improve soil fertility and promote the growth and fruiting of Liangping pomelo.
Key words:  Citrus maxima (Burm.) Merr. cv. Liangping You  soil nutrient  soil fertility  Nemerow synthesis index method  evaluation
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