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从问题所述情况看,栀子可能患了黄化病,此病主要是土壤缺乏铁元素且酸性不够造成的。要种好栀子,首先应选用透气性能好、富有养分的酸性土壤。盆土应以山泥、少量砻糠灰、骨粉和硫酸亚铁粉剂均匀混合配制而成。另外生长期每隔半月浇一次复合化肥水(宜淡不宜浓)或稀释后的有机液肥。一月左右浇一次1％的尿素铁溶液[Fe(N_2H_4Co]_6(NO_3)_3。这是一种新的溶化型化肥,氮和硝酸氨为34％,含铁量为8.85％,易溶于水,呈弱酸性,浇入土壤中有利于植物对铁的吸收。孕蕾期每周可用0.2％的磷酸二
From the situation described in the problem, gardenia may have yellow disease, the disease is mainly due to the lack of iron and soil acidity caused. To plant good gardenia, the first choice should be good ventilation, nutrient-rich acidic soil. Pentu should be mud, a small amount of chaff ash, bone meal and ferrous sulfate powder evenly mixed preparation. In addition, once every half a month during the period of compound fertilizer water (diluted should not thick) or diluted organic liquid fertilizer. A 1% urea solution [Fe (N_2H_4Co] _6 (NO_3) _3] is poured in January, which is a new type of dissolving fertilizer with 34% nitrogen and ammonium nitrate and 8.85% iron, which is easily soluble in Water, was weakly acidic, poured into the soil is conducive to the absorption of iron plants. Pregnancy bud week available 0.2% per week of phosphate