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抗旱剂一号(即黄腐酸)是利用化学、生物及测试手段,经多年研制成功的一种植物生长调节剂。在干旱和干热风条件下,能显著发挥其抗旱增产作用。笔者在小麦田上进行了试验。其结果表明:一般可增产12.8％;在干旱严重的情况下可增产29.6％。小麦应用抗旱剂一号主要在两个时期,①拔节孕穗期,对水分亏缺特别敏感,喷施此剂主要抗御春旱;②灌浆初期,主要是防干
Drought-resistant agent on the 1st (fulvic acid) is the use of chemical, biological and test means, after years of successful development of a plant growth regulator. Under the conditions of drought and hot and dry wind, it can exert its drought-resistant and yield-increasing effects remarkably. The author conducted experiments on the wheat field. The results show that: general increase of 12.8%; in severe cases of drought can increase 29.6%. Drought-resistant wheat on the 1st application of the main two periods, ① jointing booting stage, particularly sensitive to water deficit, sprays this agent mainly to resist spring drought; ② grouting early, mainly dry