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首页> 外文期刊>HortScience >Container-grown Ornamental Plant Growth and Water Runoff Nutrient Content and Volume Under Four Irrigation Treatments
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Container-grown Ornamental Plant Growth and Water Runoff Nutrient Content and Volume Under Four Irrigation Treatments

机译：四种灌溉方式下容器生长的观赏植物生长及径流养分含量和体积

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Container-grown woody ornamentals were irrigated according to a percentage of daily water use (DWU) or a traditional irrigation rate to evaluate plant growth, irrigation volume, runoff, and nutrient loss from each irrigation treatment. Deutzia gracilis Sieb. and Zucc. 'Duncan', Kerria japonica (L.) DC. 'Albiflora', Thuja plicata D. Don. 'Atrovirens', and Viburnum dentatum L. 'Ralph Senior' were grown in 10.2-L (# 3) containers under four overhead irrigation treatments: 1) a control irrigation rate of 19 mm per application (control); 2) irrigation scheduled to replace 100% .DWU per application (100DWU); 3) irrigation alternating every other application with 100%) replacement of DWU and 75% DWU (100-75); and 4) irrigation scheduled on a three-application cycle with one application of 100% DWU followed by two applications replacing 75% DWU (100-75-75). Applications were separated by at least 24 h. Total irrigation applied for the 100DWU, 100-75, and 100-75-75 treatments was 33%, 41%, and 44% less, respectively, than the total water applied by the control treatment of 123 L per container. Plants grown under the three DWU treatments had a final growth index greater than or equal to plants irrigated by the control treatment depending on species. Daily average runoff volumes from production areas irrigated with 100% and 750% DWU were 66% and 79% lower than average control runoff of 11.4 L.m(-2).d(-1) across all collection days. Quantity, of NO3--N lost daily across all collection days for the 100% DWU and 75% DWU irrigation volumes averaged 38% and 59% less, respectively, than the control. Daily losses Of PO43--P quantities across all collection days under the 100% and 75% DWU volumes were 46% and 74% lower, respectively, compared with the control. Irrigating according to the DWU treatments used in this study reduced irrigation and runoff volumes and NO3--N and PO43--P losses compared with a control of 19 mm per application while producing the same size or larger plants.
机译：根据每日用水量（DWU）或传统灌溉速率对容器生长的木质观赏植物进行灌溉，以评估每种灌溉处理的植物生长，灌溉量，径流和养分流失。 gra虫和祖克。 '邓肯'（Kerria japonica（L.）DC）。 'Albiflora'，金钟柏复制唐。 “ Atrovirens”和“ Viburnum dentatum L。”（Ralph Senior）在10.2L（＃3）容器中通过四种高架灌溉处理种植：1）每次施用的对照灌溉速率为19 mm（对照）; 2）灌溉计划替换每个应用程序100％.DWU（100DWU）; 3）交替灌溉，每隔100％更换DWU和75％DWU（100-75）; 4）按三个施用周期进行灌溉，一次施用100％DWU，然后两次代替75％DWU（100-75-75）。应用程序至少间隔24小时。 100DWU，100-75和100-75-75处理的总灌溉量分别比对照处理的每个容器123 L的总灌溉水量减少33％，41％和44％。在三种DWU处理下生长的植物的最终生长指数大于或等于通过对照处理灌溉的植物（取决于物种）。在所有收集日中，使用100％和750％DWU灌溉的生产区域的日平均径流量比平均控制径流量11.4 L.m（-2）.d（-1）分别低66％和79％。在100％DWU和75％DWU灌溉量的所有收集日中，每天损失的NO3--N数量平均比对照分别减少38％和59％。在DWU量为100％和75％的情况下，所有收集日的PO43-P量的每日损失分别比对照组低46％和74％。在生产相同大小或更大的植物时，与每次施用19毫米的对照相比，根据本研究中使用的DWU处理进行的灌溉减少了灌溉和径流量以及NO3--N和PO43-P的损失。

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