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试验方法供试品种:杂交水稻为“汕优二号”,对照种“IR_(24)”。根据本区7月下旬高温出现频率最大的规律,试验通过分期播种盆栽培育,将处于幼穗分化始期、孕穗期、抽穗开花期、乳熟期的水稻材料,同时于7月25—30日,连续6日置于塑料薄膜棚半遮盖条件下,进行人工辅助增温处理。处理期间日平均气温30.65℃,最高温度36.1℃。干旱处理区,7月24日排水,7月30日至8月1日水稻连续蔫萎3日,8月2日复水,复水前测定土壤
Test methods Test varieties: Hybrid rice “Shanyou 2”, the control species “IR_ (24).” According to the law of the highest frequency of occurrence of high temperature in late July in this area, the experiment was carried out by potted sowing in stages, and the rice materials at the beginning of panicle differentiation, booting stage, heading and flowering stage and milky ripening stage were collected. At July 25-30, 6 consecutive days placed in the plastic film shed semi-covered conditions, artificial warming warming. Average daily temperature during treatment 30.65 ℃, the maximum temperature of 36.1 ℃. Drought treatment zone, drainage on July 24, July 30 to August 1 Rice continuous wilting 3 days, August 2 rewatering, re-determination of soil before rehydration