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内蒙古达拉特旗黄河灌区春季返盐气象条件分析
引用本文:杨泽龙.内蒙古达拉特旗黄河灌区春季返盐气象条件分析[J].中国农学通报,2019,35(6):70-76.
作者姓名:杨泽龙
作者单位:内蒙古自治区达拉特旗气象局
基金项目:内蒙古自治区自然科学基金项目“内蒙古黄河灌区土壤次生盐渍化的气候动力因子及其调控阈值”(2014MS0406)
摘    要:研究旨在分析内蒙古达拉特旗沿黄河灌溉区春季返盐气象条件,探究土壤盐分表聚过程中的可预报性气象指标。采用达拉特旗国家气象观测站1980—2013年间的月观测统计资料建立数据集,选择温度、降水、风速等方面的20个气象指标为分析变量,运用SAS 8.1统计分析软件进行多元统计分析。结果显示:20个气象指标中的9个指标在个别月份之间的差异不显著,土壤返盐较为严重的春季所含月份为3月和4月。选出了达拉特旗气象条件的8个关键性气象因子,其中空气相对湿度、月平均风速、月最大风速与冬、春季6个月份的对应关系较好。得出达拉特旗黄灌区土壤春季返盐的可预报性气象指标为:2月到3月中旬的月平均气温、月平均最高气温、月平均地表温度和月平均最高地表温度,以及3月下旬到5月份的月平均风速和月最大风速。

关 键 词:生物菌肥  生物菌肥  库尔勒香梨  腐烂病  土壤养分  
收稿时间:2018-09-04

Meteorological Condition of Salt Accumulation in Spring of Yellow River Irrigational Area in Dalate Banner,Inner Mongolia
Abstract:To analyze the meteorological conditions of soil salt accumulation at Dalate Banner of Inner Mongolia in spring, and to explore the predictable indices to forecast the process of salt accumulation, we used the monthly meteorological data (from 1980 to 2013) of the National Meteorological Observatory at Dalate Banner, selected 20 meteorological indices of temperature, precipitation and wind speed as variables for multivariate statistical analysis with SAS 8.1. The results showed that nine of the 20 meteorological indices had no significant difference on some months, and March and April were the spring months with heavy salt accumulation on soil surface. 8 indices were selected as the key factors to meteorological conditions in Dalate Banner, among which the average relative humidity of air, monthly average wind speed and monthly maximum wind speed had good correspondences to the six months of spring and winter. According to the analysis of meteorological environmental conditions, the monthly average temperature of air, monthly maximum average temperature of air, monthly average temperature of soil surface, and monthly maximum average temperature of soil surface from February to mid-March, and the monthly average wind speed and monthly maximum wind speed from late March to May could be predictable indices for soil salt accumulation of Dalate Banner in the spring.
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