번식방법, 재식밀도, 질소시비량 및 재배년수가 천문동의 생육과 수량에 미치는 영향
Effect of Propagation Method, Planting Density, Amount of Nitrogen Fertilizer and Cropping Years on Growth and Yield of Asparagus Cochinchinensis (Lour.) Merr
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초록
Cultural practices of Asparagus cochinchinensis in highland area were performed for a potential medicinal crop. These studies were examined to propagation methods, planting densities, nitrogen treatments, and cropping years. The results are summarized as follows. The adequate number of buds per tuberous root was 4 for vegetative propagation because the number of tuberous root harvested was 16.8 and the yield was also the highest, exhibiting 1,060 ㎏/10a. The suitable planting time for vegetative propagation was later than early April. If the earlier tuberous roots were planted, the less they emerged. The highest emergence rate was obtained from the planting density of 30 × 20㎝ as 97.2% while the yield was highest in the 30 × 15㎝ density, exhibiting 1,883 ㎏/10a with emergence rate at 94.9. It seemed that the higher planting density promoted plant height growth and yield in Asparagus cochinchinensis. The highest fresh weight was recorded at 6 ㎏/10a of nitrogen fertilizer into the sandy loam soil compared to the level of 0, 3, 9 ㎏/10a. The yield was increased with cropping years. However, the proper harvesting time was the second year of cultivation because the rate of weight increase was maximized in the 2-year-old tuberous root. The yield in the third year was decreased as compared to that of the second year.
Abstract
Cultural practices of Asparagus cochinchinensis in highland area were performed for a potential medicinal crop. These studies were examined to propagation methods, planting densities, nitrogen treatments, and cropping years. The results are summarized as follows. The adequate number of buds per tuberous root was 4 for vegetative propagation because the number of tuberous root harvested was 16.8 and the yield was also the highest, exhibiting 1,060 ㎏/10a. The suitable planting time for vegetative propagation was later than early April. If the earlier tuberous roots were planted, the less they emerged. The highest emergence rate was obtained from the planting density of 30 × 20㎝ as 97.2% while the yield was highest in the 30 × 15㎝ density, exhibiting 1,883 ㎏/10a with emergence rate at 94.9. It seemed that the higher planting density promoted plant height growth and yield in Asparagus cochinchinensis. The highest fresh weight was recorded at 6 ㎏/10a of nitrogen fertilizer into the sandy loam soil compared to the level of 0, 3, 9 ㎏/10a. The yield was increased with cropping years. However, the proper harvesting time was the second year of cultivation because the rate of weight increase was maximized in the 2-year-old tuberous root. The yield in the third year was decreased as compared to that of the second year.
참고문헌 (14)
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