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植物缺绿病是很普遍的,其种类甚多,以缺铁所引起的缺绿病最为常见。在钙土(石灰性土)中尤为严重,因之又称为钙土诱导性缺绿病。在我国北方很多地区经常可以见到植物缺绿,很多喜酸性的观赏植物,不能长期在这些地区生长发育。我们在1959年进行了关于缺绿病方面的研究,选用栀子花(Gardenia jasminoides Ellis)作为试验材料,这些材料一部份由北京郊区引入,其叶片出现严重的缺绿症状;另一部份从广州运来,其叶片颜色黑绿,表面光亮。试验共分四个处理:(1)棉子饼加黑矾(FeSO_4·7H_2O)酿合比例为棉子饼7斤,黑矾5斤、加水(自来水)200斤,发酵一周后开始使用,花农称它为“矾肥水”(简称C—Fe);(2)对照:用自来水灌溉,每周灌两次马掌水(简称GK);(3)用0.2％FeSO_4·7H_2O溶液灌溉(简称Fe);(4)用0.3％醋酸(pH 3—4)灌溉(简称 AA);每一处理中分原已缺绿的(Y组)和正常绿色的(G组)两组,各处理 10盆。处理从 1959年 5月 29日开始到8月24日,三个月期间每周处理两次(星期一、五),共处理18次,有时因雨而暂停处理,其余时间仍用自来水灌溉。
Plant chlorosis is very common, many types of its, to lack of iron caused by the lack of green diseases most common. In calcareous soil (calcareous soil) is particularly serious, it is also known as calcareous soil-induced chlorosis. In many parts of northern China, plants can often be found lack of green, many acidic ornamental plants, can not long-term growth in these areas. In 1959, we conducted a research on green-borne diseases using Gardenia jasminoides Ellis as a test material. Some of these materials were introduced from the outskirts of Beijing and their leaves showed severe green-deficiency symptoms. The other part Transported from Guangzhou, its leaves black and green color, bright surface. The experiment is divided into four treatments: (1) cottonseed cake plus black alum (FeSO 4 · 7H 2 O) brewing ratio of 7 kg of cotton cake, black alum 5 kg, add water (tap water) 200 pounds, (2) Control: Irrigation with tap water, twice a week horseshoe water (GK); (3) Irrigation with 0.2% FeSO 4 · 7H 2 O (abbreviated as Fe) ; (4) Irrigated with 0.3% acetic acid (pH 3-4) (AA for short); each treatment was divided into two groups of greening (Y group) and normal green group (G group). The treatment started from May 29, 1959 to August 24, and was handled twice a week (Monday and Friday) during the three-month period for a total of 18 treatment times. Sometimes the treatment was suspended due to rain and the tap water was still used for the rest of the time.