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以Y两优1号为材料,进行了新型增产抗倒剂立丰灵在直播稻上的适宜用量与使用时期研究,其中施用时期设6月20日、7月6日、7月13日、7月20日(拔节期)和8月1日5个处理,施用量设每公顷用立丰灵泡腾片45,105,165片3个处理。结果表明:与其它喷施时期相比,在7月6日(拔节前14 d)喷施立丰灵泡腾片能增加穗下第3节间长度,降低穗下第4、第5节间长度,增大穗下第3、第4、第5节间的粗度、壁厚和抗折力,增加植株的根系重量,尤其是根系鲜重,从而降低倒伏指数;不同施用时期处理对产量影响不显著;立丰灵泡腾片用量以105片/hm2较好。
Y Liangyou 1 was used as material to study the suitable dosage and period of application of Lifengling, a new yield-increasing anti-reversion agent, on direct seeding rice. The application period was set on June 20, July 6, July 13, July 20 (jointing) and August 1, 5 treatment, the amount of application per hectare with Lifeng Ling effervescent tablets 45,105,165 3 treatment. The results showed that spraying Lifengling effervescent tablets on July 6 (14 d before jointing) increased the length of the third internode and the length of interchain 4 and 5 in the spike , Increase the coarseness, wall thickness and resistance to stress of the third, fourth and fifth internodes, and increase the root weight of the plants, especially the fresh weight of the roots, thereby reducing the lodging index; the effect of different application periods on the yield Not significant; Lifeng Ling effervescent dosage to 105 / hm2 better.