Rice Yield Under Different Cultivation Patterns

doi:10.11924/j.issn.1000-6850.casb18070080

Abstract

Abstract: The objective is to study the effect of cultivation patterns on rice yield. A field experiment was set up, and three treatments were transplanting rice (TR), broadcast sowing (BS), and sowing in line (SL). The yield and the yield components were detected. The reasons for the differences in rice yield under different cultivation patterns were investigated. The results showed that the yield with TR was higher (10390 kg/hm2) than that of BS (7790.7 kg/hm2) and SL (9105.2 kg/hm2). The harvest index of BS, SL and TR was 56.5, 54.7 and 53.9 respectively. The ground dry matter production with TR was higher than that of BS and SL, and the higher ground dry matter with TR contributed to more panicle number per unit area and more number of spikelets per panicle, especially the latter, which was 39% and 26.9% higher than that of BS and SL, respectively, and it had a significantly positive correlation with rice yield (correlation coefficient 0.795). The benefit-to-cost ratio was the highest with SL (2.52) among the three cultivation patterns. It suggested that the reason for higher yield with TR is the more spikelets per panicle than the direct-seeding methods (BS and SL). However, considering the cost input, the benefit of SL is higher in rice production.

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