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增施钙肥。钙能促进荚果形成,减少结荚和提高饱果率。在酸性土壤里施用钙质肥料(如石灰)可以降低土壤酸度,有利于根瘤固氮,提高花生产量和品质。花生缺钙症状是:植株生长缓慢,根细苗弱,老叶边缘又叶片表面出现不规则的白色小斑点,新生叶片小。用石灰作追肥时,可以在初花期结合中耕培土试施于花生棵结荚区内,一般每667米~2施5～8千克。
Increased calcium fertilizer. Calcium can promote pod formation, reduce pod and improve full fruit rate. Applying calcareous fertilizer (such as lime) in acid soil can reduce soil acidity, help nitrogen fixation of nodule and increase yield and quality of peanut. The symptoms of calcium deficiency in peanuts are: the plants grow slowly, the root seedlings are weak, and the edges of the old leaves have irregular small white spots on the leaf surface, and the new leaves are small. When using lime as top dressing, it can be applied to the peanut knot podding area at the first flowering stage in combination with tillage and earthing cultivation, generally applying 5 to 8 kg per 667m ~ 2.