不同降水年型下水氮调控对小麦产量及生物量的影响
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茹晓雅,李广,陈国鹏,张统帅,闫丽娟
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Regulation effects of water and nitrogen on wheat yield and biomass in different precipitation years
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Xiao-Ya RU,Guang LI,Guo-Peng CHEN,Tong-Shuai ZHANG,Li-Juan YAN
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表1 土壤参数
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Table 1 Soil parameters
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土层 Soil layer (cm) | 田间最大持水量 Drained upper limit (mm mm-1) | 小麦有效 水分下限 Wheat low limit (mm mm-1) | 容重 Bulk density (g cm-3) | 萎蔫系数 Wilting coefficient (mm mm-1) | 饱和含水量 Saturated moisture ( mm mm-1) | 有机碳 Organic carbon (%) | 铵态氮 NH4-N (mg kg-1) | 硝态氮 NO3-N (mg kg-1) | >0-5 | 0.27 | 0.09 | 1.29 | 0.08 | 0.46 | 0.95 | 6.30 | 19.10 | >5-10 | 0.27 | 0.09 | 1.23 | 0.08 | 0.49 | 0.95 | 5.20 | 15.20 | >10-30 | 0.27 | 0.09 | 1.32 | 0.08 | 0.45 | 0.96 | 5.10 | 23.10 | >30-50 | 0.27 | 0.09 | 1.20 | 0.08 | 0.50 | 0.85 | 4.90 | 16.60 | >50-80 | 0.26 | 0.09 | 1.14 | 0.09 | 0.52 | 0.54 | 4.60 | 16.80 | >80-110 | 0.27 | 0.10 | 1.14 | 0.09 | 0.52 | 0.26 | 4.80 | 18.20 | >110-140 | 0.27 | 0.11 | 1.13 | 0.11 | 0.48 | 0.20 | 4.80 | 16.40 | >140-170 | 0.27 | 0.13 | 1.12 | 0.13 | 0.53 | 0.26 | 5.80 | 13.70 | >170-200 | 0.27 | 0.15 | 1.11 | 0.13 | 0.53 | 0.20 | 4.10 | 15.40 |
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