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首页> 外文期刊>Journal of Agrometeorology >Growth and yield prediction of wheat in relation to agroclimatic indices under irrigated and rainfed condition
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Growth and yield prediction of wheat in relation to agroclimatic indices under irrigated and rainfed condition

机译：灌溉和雨养条件下小麦生长和产量与农业气候指数的关系

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Field experiments were conducted during rabi season of 2005-06 and 2006-07 in irrigated as well as rainfed conditions under subtropical condition of Jammu with three cultivars (PBW-343, RSP-81 and Raj-3765) of wheat sown on normal dates of sowing withfour replications. The different agroclimatic indices were derived at different phenophases. The results revealed that crop experienced 1670 oC day, 19584oC day hours and 10371oC day hours accumulated growing degree days (GDD), cumulative photothermal (PTU) and heliothermal units (HTU), respectively for attaining the maturity under irrigated conditions. The variety PBW 343 took higher thermal time (1602oC days) as compared to Raj 3765 (1576 oC days) and RSP81 (1574 oC days) for attaining physiologicalmaturity. Maximum heat use efficiency (HUE) by variety PBW343 (5.87 kgha-1 oC days) was found under irrigated situation as compared to other cultivars. GDD was found best indices for prediction of phenology followed by PTU, HTU.
机译：在2005年6月和2006年7月的狂犬病季节，在查mu的亚热带条件下的灌溉和雨水条件下进行了田间试验，分别使用正常日期播种的三种小麦（PBW-343，RSP-81和Raj-3765）。播种四次重复。在不同的表相期获得了不同的农业气候指数。结果表明，为了在灌溉条件下达到成熟，分别经历了1670 oC日，19584oC日小时和10371oC日小时的累积生长日（GDD），累积光热（PTU）和日热单位（HTU）。 PBW 343的热成熟时间（1602oC天）比Raj 3765（1576 oC天）和RSP81（1574 oC天）要更长，以达到生理成熟度。与其他品种相比，在灌溉条件下，PBW343品种（5.87 kgha-1 oC天）的最大热利用效率（HUE）被发现。发现GDD是预测物候的最佳指标，其次是PTU，HTU。

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