关键词: 细胞重建, 细胞重建

Abstract:

In order to find out phosphorus absorption dynamic and master the law of dry matter accumulation of Radix Hedysari, the field experiment was implemented by combining application of palygorskite and NPK fertilizer in different proportions to make a comparative study. It also could provide theoretical basis of establishing Radix Hedysari GAP base construction. The results showed that the activity accumulative period of P accumulation amount in single plant aerial part of Radix Hedysari was appeared from late July to late August, and the activity accumulative period of P accumulation amount in root was appeared from late August to late September. The dry matter accumulation amount in single plant aerial part of Radix Hedysari under P3 and P2 treatment increased by 53.7% and 49.6%, respectively, compared to CK treatment in late September. Significant binomial correlation existed between the application amount of palygorskite and phosphorus fertilizer agronomic efficiency, phosphorus fertilizer utilization ratio. The dry matter accumulation amount in single plant root of Radix Hedysari under NPK+P3 and NPK+P2 treatment increased by 9.27% and 17.35%, respectively, compared to NPK treatment in late October. The yield of NPK+P3 treatment increased by 17.38%, compared with that of NPK treatment. Timely supply of P should be highly concerned in July and September in Radix Hedysari field. Application of 2250 kg/hm2 palygorskite could significantly promote phosphorus fertilizer utilization ratio of Radix Hedysari, and also increase yield of Radix Hedysari.