The paddy soils of Yükianghsien are generally deficient in phosphorus. Field experiments on application of phosphorus fertilizers nave the following results:1. Application of inorganic phosphorus fertilizers to Astragalus sinicus improved its growth and yield. The root system developed well;the number of nodules increased;the phosphorus content of the plant also increased significantly.2. In the field where Astragalus sinicus had been grown with dressing of phosphorus fertilizer,rice yielded higher than otherwise.3. Rice gave a higher yield with the same amount of phosphorus fertilizer applied to Astragalus sinicus prior to the rice crop than to the rice itself directly.It is therefore clear that to increase the yield of Astra,ealus stntcus by application of phosphotus fertilizers proves to be a very effective way of raising the yield of rice. And this has been carried out on large scale successfully in the people's communes.