不同覆盖方式对旱作马铃薯生长及土壤水热特征的影响
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普雪可,吴春花,勉有明,苗芳芳,侯贤清,李荣
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Effects of Different Mulching Patterns on Growth of Potato and Characteristics of Soil Water and Temperature in Dry Farmland
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XueKe PU,ChunHua WU,YouMing MIAN,FangFang MIAO,XianQing HOU,Rong LI
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表2 不同处理下马铃薯地上部生物量动态累积模型参数特征值
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Table 2 Parameter eigenvalues of biomass accumulation model of potato above-ground biomass under different treatments
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年份 Year | 处理 Treatment | 拟合参数 Regression parameter | R2 | 快速生长期特征值 Characteristic Value of Rapid Growth period | Km ( t·hm-2) | a | b | T1 (d) | T2 (d) | T0(d) | ΔT(d) | Vmax ( t·hm-2·d-1) | 2015 | DD | 13.2 | 103.1 | 0.059 | 0.991** | 56.3 | 100.9 | 44.6 | 78.6 | 0.19 | DJ | 15.0 | 96.3 | 0.057 | 0.976** | 57.0 | 103.2 | 46.21 | 80.1 | 0.21 | DB | 9.3 | 158.7 | 0.069 | 0.987** | 54.3 | 92.5 | 38.2 | 73.4 | 0.16 | CK | 8.5 | 181.9 | 0.072 | 0.97*0* | 54.0 | 90.6 | 36.6 | 72.3 | 0.15 | 2016 | DD | 13.0 | 64.8 | 0.061 | 0.987** | 46.8 | 90.0 | 43.14 | 68.4 | 0.20 | DJ | 14.3 | 85.1 | 0.059 | 0.993** | 53.0 | 97.6 | 44.6 | 75.3 | 0.21 | DB | 7.3 | 69.8 | 0.064 | 0.971** | 45.8 | 86.9 | 41.1 | 66.3 | 0.12 | CK | 6.5 | 64.5 | 0.066 | 0.964** | 43.2 | 83.1 | 39.9 | 63.1 | 0.11 |
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