江西农业大学学报
江西農業大學學報
강서농업대학학보
ACTA AGRICULTURAE UNIVERSITATIS JIANGXIENSIS
2015年
4期
749-758
,共10页
贾秋洪%景元书%Buaphean Ruthaikarn
賈鞦洪%景元書%Buaphean Ruthaikarn
가추홍%경원서%Buaphean Ruthaikarn
农业气象学%季节性干旱%土壤水分平衡%土壤干旱指数模型%土壤相对湿度指数
農業氣象學%季節性榦旱%土壤水分平衡%土壤榦旱指數模型%土壤相對濕度指數
농업기상학%계절성간한%토양수분평형%토양간한지수모형%토양상대습도지수
agricultural meteorology%seasonal drought%soil water balance%soil drought index model%soil relative humidity index
通过两种不同的干旱判别方法研究我国亚热带红壤丘陵区季节性干旱的发生状况及严重程度。首先，以鹰潭红壤区相应的气象数据资料为基础，从土壤水分平衡原理出发，应用桑斯维特修正公式，建立土壤干旱指数模型，据此计算分析土壤可能蒸散量及其土壤干旱指数；其次，利用鹰潭市余江县刘垦三分场花生和橘园地两年生长季的土壤水分数据进行土壤湿度分析，估算土壤相对湿度指数。以便结合土壤干旱标准对鹰潭红壤区季节性干旱进行判别研究，进而选择合适的干旱判别方法。研究结果表明：从气象数据出发，该地区5、6月无旱情发生，7—9月为干旱多发月份；从土壤水分数据出发，试验场的花生和橘园地5—9月均有旱情发生，但7—9月旱情更为严重；两种方法所得结果虽不完全一致，但基本趋势一致；对比两者，选择前者作为干旱判别方法更为合理，有利于为当地防御干旱、科学利用土地、合理灌溉及提高农作物产量提供依据。
通過兩種不同的榦旱判彆方法研究我國亞熱帶紅壤丘陵區季節性榦旱的髮生狀況及嚴重程度。首先，以鷹潭紅壤區相應的氣象數據資料為基礎，從土壤水分平衡原理齣髮，應用桑斯維特脩正公式，建立土壤榦旱指數模型，據此計算分析土壤可能蒸散量及其土壤榦旱指數；其次，利用鷹潭市餘江縣劉墾三分場花生和橘園地兩年生長季的土壤水分數據進行土壤濕度分析，估算土壤相對濕度指數。以便結閤土壤榦旱標準對鷹潭紅壤區季節性榦旱進行判彆研究，進而選擇閤適的榦旱判彆方法。研究結果錶明：從氣象數據齣髮，該地區5、6月無旱情髮生，7—9月為榦旱多髮月份；從土壤水分數據齣髮，試驗場的花生和橘園地5—9月均有旱情髮生，但7—9月旱情更為嚴重；兩種方法所得結果雖不完全一緻，但基本趨勢一緻；對比兩者，選擇前者作為榦旱判彆方法更為閤理，有利于為噹地防禦榦旱、科學利用土地、閤理灌溉及提高農作物產量提供依據。
통과량충불동적간한판별방법연구아국아열대홍양구릉구계절성간한적발생상황급엄중정도。수선，이응담홍양구상응적기상수거자료위기출，종토양수분평형원리출발，응용상사유특수정공식，건립토양간한지수모형，거차계산분석토양가능증산량급기토양간한지수；기차，이용응담시여강현류은삼분장화생화귤완지량년생장계적토양수분수거진행토양습도분석，고산토양상대습도지수。이편결합토양간한표준대응담홍양구계절성간한진행판별연구，진이선택합괄적간한판별방법。연구결과표명：종기상수거출발，해지구5、6월무한정발생，7—9월위간한다발월빈；종토양수분수거출발，시험장적화생화귤완지5—9월균유한정발생，단7—9월한정경위엄중；량충방법소득결과수불완전일치，단기본추세일치；대비량자，선택전자작위간한판별방법경위합리，유리우위당지방어간한、과학이용토지、합리관개급제고농작물산량제공의거。
With two drought identification methods the occurrence status and severity of seasonal drought in subtropical red soil hilly regions were studied.First, starting from the soil water balance principle a soil drought index model was established by using Thornthwaite formula on the basis of the corresponding meteoro-logical data in the red soil hilly region of Yingtan,then the soil potential evapotranspiration and soil drought in-dex were calculated and analyzed.Next,the soil moisture was analyzed to estimate the relative soil moisture in-dex by using the soil moisture data of peanut and orange grove land in the growing seasons in two years in the Liu Ken Third-Farm of Yujiang County in Yingtan.The seasonal drought discriminating in Yingtan red soil re-gion was studied with soil drought standard,and then proper drought identification methods were selected.The results showed:from the meteorological data it was found that no drought occurred in May and June in this re-gion and July to September were the drought-prone months;from the soil moisture data it was found that the proving grounds were always dry from May to September but the drought was more serious from July to Septem-ber.Thought the results of the two methods were not exactly the same,the underlying trend was consistent.Com-paring the two methods, choosing the former as the drought identification method is more reasonable.All this provides the basis for drought defense,scientific using of land,reasonable irrigation and improvement of crop production in the local city.
