In the historical period, the good forest covering, the sufficient water resource and the clouding and humid environment provided the essential condition for malaria's production in Sichuan area.
历史时期，四川地区良好的森林覆盖、充足的水源补给以及湿热封闭的环境都为瘴气的产生提供了必要的条件；
The result in room indicated: Increasing fertilizer could improve leaf RWC under sufficient water condition;
室内试验结果表明：水分充足时，施加肥料对提高RWC 有益；
The result in room indicated: Increasing fertilizer could improve leaf RWC under sufficient water condition;
室内试验结果表明：水分充足时，施加肥料对提高RWC 有益；
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