| 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 |
| Key Words: trellis-cultivated melon soil Olsen_P biomass phosphorus accumulation yield qualtity |
| Author Name | Affiliation | | CHEN Bo-lang | College of Pratacultural and Environmental Science, Xinjiang Agriculture University, Urumqi, Xinjiang 830052, China | | WU Hai-hua | College of Pratacultural and Environmental Science, Xinjiang Agriculture University, Urumqi, Xinjiang 830052, China | | LUO Jia | College of Pratacultural and Environmental Science, Xinjiang Agriculture University, Urumqi, Xinjiang 830052, China | | HAO Li-na | College of Pratacultural and Environmental Science, Xinjiang Agriculture University, Urumqi, Xinjiang 830052, China | | SHENG Jian-dong | College of Pratacultural and Environmental Science, Xinjiang Agriculture University, Urumqi, Xinjiang 830052, China | | QI Xiao-chen | College of Pratacultural and Environmental Science, Xinjiang Agriculture University, Urumqi, Xinjiang 830052, China |
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| Abstract: |
| 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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