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早在三十年代苏联学者从土壤中分离到硅酸盐细菌,并测定解钾强度,培养5d分离出来的钾量为原硅酸盐中含量的15.9％,同时在不同土壤和不同农作物上进行了盆栽和田间试验,证明对农作物生长有较好的促进作用和增产效果。也有一些学者认为硅酸盐细菌的作用是刺激作用,为农作物补充钾素营养是微不足道的。 作者分离到硅酸盐细菌HM8841菌株,经工业发酵研制成菌剂。该菌剂经几年的大面积推广应用,在缺钾土壤上对各种农作物均表现出较好的增产效果。尤其在土壤中速效钾严重不足的情况下,施用该菌剂增产更加明显。这充分说明土壤缺少速效钾是限制农作物增产的重要原因。HM8841菌株能为农作物提供一定量的钾素使农作物提高产量。但其解钾能力有多高,能提供多少钾素,需要进一步研究。为此作者采取不同的方法,不同的底物对HM8841菌株的解钾效能进行了研究,现将结果报
As early as the thirties, Soviet scholars isolated silicate bacteria from soil and determined the de-potash strength. The amount of potassium isolated from cultivation for 5 days was 15.9% of the content of orthosilicate, and was carried out on different soils and on different crops at the same time Potted and field experiments proved that the crop growth has a better role in promoting and increasing yield. Some scholars believe that the role of silicate bacteria is to stimulate the role of crop potassium supplement is negligible. The authors isolated silicate bacteria HM8841 strain, developed by the industrial fermentation agent. After several years of extensive use of the fungicide, potassium deficiency in the soil on a variety of crops have shown a better yield. Especially in the soil under the conditions of a serious shortage of available potassium, the use of the fungicide yield more obvious. This fully shows that lack of available potassium in soil is an important reason for limiting crop yield. The HM8841 strain can provide crops with a certain amount of potassium to increase crop yield. However, how high potassium capacity, how much potassium can provide, need further study. To this end the authors take a different approach, different substrates for the potassium-releasing effect of HM8841 strains were studied, the results reported