摘要
Abstract
[Objective] The aim was to explore and summarize the high yield cultivation model of medium Indica Hybrid Rice in Jianghuai Area. [ Method ] According to the Anhui Provincial rice growth monitoring project, starting from the actual production, the effects of seedling quality, fertilization in seedling field, seedling transplanting quality, and leaf and stem changes and fertilization in field during rice growth key period on medium Indica Hybrid Rice yield were actively surveyed and studied by the difference and correlation analysis method. [ Result] The results showed that suitable early sowing, reducing sowing amount, increasing seedling age and controlling seedlings height and so on was in favour of improving yield of medium Indica Hybrid Rice. Increasing seedling fertilization amount, heavy basis fertilizer, suitable amount of "weaning fertilizer" and "sending to marry fertilizer" could significantly increase grain yield of medium Indica Hybrid Rice, lack of fertilizer and incorrect fertilization method caused the forming of the middle and low yield field. Increasing the basic seedlings was effective method of obtaining high yield, and a small number of seedling per hole and the basic seedlings were the fundamental reason for the forming of the middle and low yield field. Appropriately increasing leaf age at critical period of effective tiller was in favour of improving yield of medium Indica Hybrid Rice. Keeping reasonable effective tiller number and increasing leaf number at heading period was favorable to improve yield of medium Indica Hybrid Rice. Increasing the field fertilization quantity and N fertilizer, P2O5 fertilizer, K2O fertilizer, tillering fertilizer and panicle fertilizer and so on could remarkably increase yield of medium Indica Hybrid Rice, and that it was difficult to promote tiller into spike because of lack of early fertilizer and quickly getting out of late fertilizer was the reason for low yield in the middle and low yield. Effective panicle number was the primary factor of deciding the yield of medium Indica Hybrid Rice. [ Conclusion ] Cultivating high-quality seedlings, maintaining a reasonable field number of basic seedling, supporting scientific and reasonable fertilizer and water management, is must measure to have higher spike number and capturing high yield.关键词
中籼稻/生产现状/调查研究/肥西县Key words
Medium Indica Rice/ Production present situation/ Investigation and research/ Feixi Country分类
农业科技
