qiujidiwenxiajiang,shucaidegenxihuizhujianlaohua,jineryingxiangzuowuduifeiliaodeyouxiaoxishou,ermuqian,qiuyanchishucaizhengchuyushengchangwangshengqi,yaotebiezhuyifeiliaodebuchong,tebieshigaifeidebuchong。
如果你家的蔬菜新生部位如頂芽、根毛的生育停滯、萎縮死亡,新葉粘連,展開的新葉常焦邊,殘缺不全;果實頂端凹陷,出現黑褐色而壞死,那麼很可能是因土壤中缺乏鈣質,因為土壤本身鈣含量偏少;而鹽分含量高,抑製根係吸收水分和養分。加上秋冬季節土壤幹旱,使得土壤溶液濃度提高,減少了根係吸水,從而抑製鈣的吸收。
qiudongjijiegeishucaishifeiyaojiangjiukexue,yingkongzhifeiliaoyongliang,buyiyiciyongfeiguoduo,tebieshihanlvhuafeirulvhuaanhelvhuajia,bingzuodaojishiguangai,fangzhiturangganhan。tongshiyemianpenshi0.3%~0.5%硝酸鈣,7天1次,連噴2~3次。西紅柿宜在開花時噴在花序上下的2~3片葉上,大白菜可在進入結球期時噴施。
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