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连续4造应用水稻控释肥进行一次性施肥技术稳定性研究,结果表明,施用50%水稻控释肥穗数增加0.35%,每穗总粒数和实粒数分别提高10.73%和7.13%,4造平均增产1.99%;施用生长调控型水稻控释肥在显著减少氮磷钾用量情况下,株高降低3~4 cm,穗数增加2.99%~9.67%,每穗实粒数增加3.51%,产量与常规分次施肥持平。由于减少施肥用工,降低肥料用量或增产,使50%、40%及30%控释肥处理每667 m2年增收节支分别达65.85、69.70、44.35元。说明一次性施用水稻控释肥具有较显著而且稳定的省工节肥和增产增收效果。
The results showed that the spike number of controlled release fertilizer with 50% rice increased 0.35%, the total grain number and real grain number per spike increased by 10.73% and 7.13% respectively, 4 increased the average yield by 1.99%. The application of growth-controlled rice controlled release fertilizer reduced the plant height by 3 ~ 4 cm, the spike number increased by 2.99% ~ 9.67% and the number of spikelets per panicle increased by 3.51% , Yield and regular sub-level fertilizer flat. As a result of reducing fertilizing labor and reducing the amount of fertilizer or increasing production, the annual increase of 65%, 40% and 30% of controlled-release fertilizer per 667 m2 was 65.85,69.70 and 44.35 yuan. This shows that the one-time application of rice controlled release fertilizer has obvious and stable provincial labor and fertilizer production and income enhancement effect.