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1989年由铜梁县农业科技人员用“九二○”(赤霉素)喷施再生稻作了不同自然区域试验和大面积示范,经方差分析与多重比较结果:栽培条件基本相同。在亩施“促芽肥”10公斤尿素的基础上,头季杂交中稻(汕优63)齐穗后20天,亩喷施“九二○”20ppm的浓度,钙质紫色水稻土、中性紫色土及微酸性紫色土的亩产依次为550、525、490公斤,分别比对照增产8.9％、5.2％、3.6％。再生稻发苗期(头季收割后3—5天)及始穗期(抽穗5—10％),亩喷施“九二○”)30ppm,3种水稻土的亩产依次为209.3、184、○56.4公斤,分别比对照增产15.9％、11.1％、110.7％。试验表明:中性紫色稻田头季稻喷施“九二后,母茎各节位倒2、倒3、倒4、倒5芽的芽长分别为4.3、2.5、1.1、0.5厘米(收前两天考察),比各对照节芽增长2.5、1.2、0.6.0.2厘米。再生稻发苗期,亩喷30ppm“九二○”液后,基本苗比对照每亩增加31％,有效穗每亩增
In 1989, the agricultural scientists and technicians in Tongliang County made different regional experiments and large-scale demonstration of spraying ratoon rice with “920” (gibberellin). The results of variance analysis and multiple comparisons showed that the cultivation conditions were basically the same. On the basis of 10 kg urea of “budding fertilizer” in Mushi, 20 days after the first season hybrid mid-rice (Shanyou 63) The yields of purple soil and slightly acidic purple soil were 550,525,490 kg, which increased by 8.9%, 5.2% and 3.6% respectively over the control. The regenerative rice seedling (3-5 days after the first harvest season) and the beginning of the heading (5-10% heading), mu spray “9/20”) 30ppm, three types of paddy soil yield 209.3,184 And 56.4 kg respectively, which increased 15.9%, 11.1% and 110.7% respectively than the control. Experiments show that: the first purple rice paddy crop spraying “after 1992, the mother stem down every bit 2, down 3, down 4, down 5 bud bud length were 4.3,2.5,1.1,0.5 cm Two days of investigation), than the control section buds increased 2.5,1.2,0.6.0.2 cm.Rapid rice seedling stage, mu spray 30ppm ”920" liquid, the basic seedlings increased 31% per acre compared with the control, the effective panicle Mu increase