贵州农业科学
貴州農業科學
귀주농업과학
GUIZHOU AGRICULTURAL SCIENCES
2015年
5期
125-128,132
,共5页
张东%扈强%侯小东%关罗浩%叶为民%刘新民%周林%闫宁
張東%扈彊%侯小東%關囉浩%葉為民%劉新民%週林%閆寧
장동%호강%후소동%관라호%협위민%류신민%주림%염저
渝东南植烟区%土壤养分%pH%元素丰缺%相关关系
渝東南植煙區%土壤養分%pH%元素豐缺%相關關繫
투동남식연구%토양양분%pH%원소봉결%상관관계
tobacco-planting arcas of the southeast of Chongqing%soil nutrient%pH%richness or defi-ciency%correlation
为渝东南烟区实施平衡施肥、改善土壤环境提供科学依据,采用 GPS 定位取样的方法对渝东南烟区典型性产烟县彭水县和武隆县的土壤 pH 分布特点及其与土壤养分的关系进行研究。结果表明:渝东南植烟土壤酸化严重,最适宜烟草生长的土壤 pH 5.5~6.5仅占36.36%;渝东南植烟土壤有效态元素含量差异明显,有效硼、有效钼含量极低,水溶性氯含量适宜,碱解氮、交换性镁含量适宜或丰富,有效磷、交换性钙含量差异较大,各级所占比例均衡;土壤 pH 与土壤有效磷、碱解氮、有效铜、有效锌和有效铁含量之间呈极显著负相关(p <0.01),与交换性钙、交换性镁含量之间呈极显著正相关(p<0.01);相对于5.5<pH≤6.5土壤,pH≤4.5土壤的有机质、碱解氮、有效磷、速效钾、有效铜、有效铁和有效锌含量较高,水溶性氯、有效锰、交换性钙和交换性镁的含量较低。
為渝東南煙區實施平衡施肥、改善土壤環境提供科學依據,採用 GPS 定位取樣的方法對渝東南煙區典型性產煙縣彭水縣和武隆縣的土壤 pH 分佈特點及其與土壤養分的關繫進行研究。結果錶明:渝東南植煙土壤痠化嚴重,最適宜煙草生長的土壤 pH 5.5~6.5僅佔36.36%;渝東南植煙土壤有效態元素含量差異明顯,有效硼、有效鉬含量極低,水溶性氯含量適宜,堿解氮、交換性鎂含量適宜或豐富,有效燐、交換性鈣含量差異較大,各級所佔比例均衡;土壤 pH 與土壤有效燐、堿解氮、有效銅、有效鋅和有效鐵含量之間呈極顯著負相關(p <0.01),與交換性鈣、交換性鎂含量之間呈極顯著正相關(p<0.01);相對于5.5<pH≤6.5土壤,pH≤4.5土壤的有機質、堿解氮、有效燐、速效鉀、有效銅、有效鐵和有效鋅含量較高,水溶性氯、有效錳、交換性鈣和交換性鎂的含量較低。
위투동남연구실시평형시비、개선토양배경제공과학의거,채용 GPS 정위취양적방법대투동남연구전형성산연현팽수현화무륭현적토양 pH 분포특점급기여토양양분적관계진행연구。결과표명:투동남식연토양산화엄중,최괄의연초생장적토양 pH 5.5~6.5부점36.36%;투동남식연토양유효태원소함량차이명현,유효붕、유효목함량겁저,수용성록함량괄의,감해담、교환성미함량괄의혹봉부,유효린、교환성개함량차이교대,각급소점비례균형;토양 pH 여토양유효린、감해담、유효동、유효자화유효철함량지간정겁현저부상관(p <0.01),여교환성개、교환성미함량지간정겁현저정상관(p<0.01);상대우5.5<pH≤6.5토양,pH≤4.5토양적유궤질、감해담、유효린、속효갑、유효동、유효철화유효자함량교고,수용성록、유효맹、교환성개화교환성미적함량교저。
To provide a scientific basis for balanced fertilization and improving soil setting,the authors used the method of GPS location system to take soil samples.The distribution of soil pH and the correlation to soil nutrient were analyzed from 131 soil samples which were collected from the typical tobacco-planting county Pengshui and Wulong in southeast of Chongqing.Results:Tobacco-planting soil acidification in southeastern of Chongqing is serious, and the most suitable tobacco grown soil pH 5.5~6.5 accounted for only 36.36%;There are significant differences in content of soil available elements in the southeast of Chongqing.The content of available boron,molybdenum is extremely low;It is suitable of water-soluble chlorine content;And the content of nitrogen, exchangeable magnesium is suitable or rich; However,the content of phosphorus, exchangeable calcium are different, and the distribution of proportion in all levels is well-balanced;Soil pH-value was highly significantly negatively correlated with the content of soil available phosphorus,nitrogen,Cu,Zn,iron pH-value,and highly significantly positively correlated with the content of exchangeable Ca,magnesium;Compared pH≤4.5 with 5.5 <pH≤6.5,the content of soil organic matter,available nitrogen,K,iron,Zn,Cu,Zn is higher.However,the content of water soluble chloride,available manganese,exchangeable calcium, magnesium is lower.