华南地区耕地缺钾的原因 -题库考试答案搜索网

华南地区耕地缺钾的原因

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2022-06-13 23:15

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正确答案

1.气候条件：高温多雨，淋溶剧烈，粘土矿物类型多为1：1型高岭土，吸持钾的能力弱，故土壤缺钾；
2.耕作制度：复种指数高，以及高产品种的引进和推广，在获得高产的同时，植物带走更多的养分，包括钾素；
3.施肥习惯：重施氮、磷，而少施或不施钾，更加剧了土壤钾的耗竭；
4.社会因素：农家肥、秸秆还田少，也减少了钾素的来源。

试题解析

标签：作物营养原理农学大学试题

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