论文部分内容阅读
[Objective] The aim was to study on the absorption and distribution laws of potassium in RADIX HEDYSARI and its response to fertilizer application, so as to provide theoretical basis for construction of GAP base. [Method] Random block experimental design was used to study on the effects of the application proportion of palygorskite and N-P-K fertilizer on the absorption and distribution of potassium in RADIX HEDYSARI. [Result] The potassium rapid accumulation period in the aboveground part of RADIX HEDYSARI was from late July to late August; the potassium rapid accumulation period in the root appeared from late August to late September. Combined application of palygorskite and N-P-K could enhance the potassium content in root, and the potassium accumulation in root and aboveground part of RADIX HEDYSARI. Palygorskite application had extremely significant binomial relationship with the agronomic efficiency of potassium fertilizer, and had linear correlation with the use efficiency of potassium fertilizer in RADIX HEDYSARI. [Conclusion] Palygorskite with the dose of 2 250 kg/hm2 could significantly promote the yield-increasing effect of potassium fertilizer and the utilization ratio of potassium fertilizer in RADIX HEDYSARI.
[Objective] The aim was to study on the absorption and distribution laws of potassium in RADIX HEDYSARI and its response to fertilizer application, so as to provide theoretical basis for construction of GAP base. [Method] Random block experimental design was used to study on the effects of the application proportion of palygorskite and NPK fertilizer on the absorption and distribution of potassium in RADIX HEDYSARI. [Result] The potassium rapid accumulation period in the above ground part of RADIX HEDYSARI was from late July to late August; the potassium rapid accumulation period in the root, from the late August to late September. Combined application of palygorskite and NPK could enhance the potassium content in root, and the potassium accumulation in root and above part part of RADIX HEDYSARI. Palygorskite application had extremely significant binomial relationship with the agronomic efficiency of potassium fertilizer, and had linear correlation with the use efficiency of po tpy fertilizer in RADIX HEDYSARI. [Conclusion] Palygorskite with the dose of 2 250 kg / hm2 could significantly promote the yield-increasing effect of potassium fertilizer and the utilization ratio of potassium fertilizer in RADIX HEDYSARI.