| 陈波浪,吴海华,罗佳,郝丽娜,盛建东,齐晓晨.土壤速效磷浓度对立架甜瓜生物量和磷素累积特征的影响[J].干旱地区农业研究,2016,34(4):153~158 |
| 土壤速效磷浓度对立架甜瓜生物量和磷素累积特征的影响 |
| Effects of soil Olsen_P concentration on biomass and phosphorus accumulation characteristics of trellis-cultivated melon |
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| DOI：10.7606/j.issn.1000-7601.2016.04.23 |
| 中文关键词: 立架甜瓜 速效磷 生物量 磷素 累积 产量 品质 |
| 英文关键词:trellis-cultivated melon soil Olsen_P biomass phosphorus accumulation yield qualtity |
| 基金项目:国家自然科学基金项目（31460542）；自治区高校科研计划科学研究重点项目（XJEDU2014I013）；土壤学自治区重点学科资助 |
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| 中文摘要: |
| 以喀什地区立架伽师瓜为研究材料，试验设置6个水平(0、150、225、300、375和450 kg·hm-2)施磷量的田间试验，研究土壤速效磷(Olsen_P)浓度对立架甜瓜生物量和磷素累积特征的影响。结果表明，施磷条件下立架甜瓜田间土壤Olsen_P浓度的动态变化可用三次函数方程模拟，立架甜瓜生物量、磷素累积动态遵循Logistic曲线；土壤Olsen_P浓度快速下降期的平均速率、持续时间分别与立架甜瓜生物量、磷素快速累积期的最大相对累积速率、持续时间存在显著或极显著的相关性；在150～225 kg·hm-2施磷量条件下，土壤Olsen_P浓度快速下降期的平均速率(0.078～0.108 mg·d-1)和持续时间(36.1～52.0 d)最佳，立架甜瓜生物量和磷素快速累积期的累积特征值，生物量、磷素累积特征值、产量以及品质均最优，其中生物量和磷素累积理论最大值以及产量分别达515.8～529.2 g·株-1，1 791.4～1 895.2 mg·株-1和68 972.0～71 037.6 kg·hm-2。高施磷量（450 kg·hm-2）和不施磷(0 kg·hm-2)均不利于立架甜瓜生物量和磷素的累积。土壤Olsen_P浓度的动态变化能响应立架甜瓜生物量和磷素的累积状况，尤其是合理施用磷肥（150～225 kg·hm-2）可调节立架甜瓜田间土壤Olsen_P浓度的动态变化，优化立架甜瓜生物量和磷素的累积以及提高其产量和品质。 |
| 英文摘要: |
| Phosphorus is the main nutrient factors improving trellis-cultivated melon yield and quality. This study aims to investigate the response of soil available phosphorus variation of different phosphorus levels and growth of trellis-cultivated melon, providing theoretical basis for the reasonable application of phosphate fertilizer in trellis-cultivated melon production. The effects of soil Olsen_P concentration on biomass and phosphorus accumulation of trellis-cultivated melon was investigated by applying six levels of phosphorus fertilizer (0, 150, 225, 300, 375 kg·hm-2 and 450 kg·hm-2), under field experiment of planting melon in Kashgar. The results showed the change of soil Olsen_P concentration could be simulated with a cubic function, biomass and phosphorus accumulation of trellis-cultivated melon with logistic formula. Average rate and duration for the soil Olsen_P concentration reduction rate had significant or extremely significant correlation with the maximum rate and duration of accumulation of biomass and phosphorus. Under the P level between 150 kg·hm-2 to 225 kg·hm-2, the soil Olsen_P had optimal average reduction rate (0.078～0.108 mg·d-1) and duration (36.1～52.0 d), trellis-cultivated melon had optimal biomass and phosphorus accumulation eigenvalues, and had the highest yield and optimal quantity. The maximum value of biomass and phosphorus accumulation as well as yield of trellis-cultivated melon in 150 kg·hm-2 and 225 kg·hm-2 treatments were 515.8～529.2 g·plant-1, 1791.4～1895.2 mg·plant-1 and 68972.0～71037.6 kg·hm-2, respectively. high (450 kg·hm-2) or low（0 kg·hm-2） phosphorus application was not favorable for biomass and phosphorus accumulation. The dynamic change of soil Olsen_P concentration responded to the biomass and phosphorus accumulation of trellis-cultivated melon. The optimal phosphorus applied level between 150 kg·hm-2 to 225 kg·hm-2 can regulate soil Olsen_P concentration, and be beneficial for optimizing biomass and phosphorus accumulation characteristics, yield and quality. |
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