Study on Nitrogen·Phosporus Absorption and Growth of Seedling of Prunus serrulata var. serrulata f. spontanea(E.H. Wilson) C. S. Chang by Treatment with Dried Swine Excrement

摘要: Prunus serrulata var. f. spontanea (E. H. Wilson) C. S. Chang was treated with dried swine excrement at various concentration levels, and their growth reactions the contents of total kjeldahl nitrogen phosphoric acid were analyzed. The result is as follows; 1. When plants 0.25% excrement, seed germination rate higher than that control. However, it showed a tendency to decrease when treatment got 0.25%. 2. species highest they excrement. It tended Significant difference clear between control experimental spontanea. 3. in also increased. content leaves, followed by roots stems. In contrast, roots, leaves Therefore, stems had lowest both acid. 4. soil measured before after experiment significantly decreased experiment. conclusion, accumulated increased level higher. plant rates best may bring high effects on increasing but could damage need. Different optimal levels for different should be found used fertilizer.