Research on Special Early Cultivation Techniques for High Yield in Early Rice Shunda 135
s:Shunda 135 is a new early maturing conventional early indica rice variety bred by Shaoxing Shunda Seed Industry Co.,Ltd.and China National Rice Research Institute.In order to fully utilize the advantages of early maturity and high yield of Shunda 135,a comparative experiment was conducted on different planting densities and fertilizer amounts under special early cultivation conditions(the sowing date is 10-15 days earlier than the traditional sowing date in Shaoxing).The results showed that planting density had a highly significant impact on the number of effective panicles and yield of Shunda 135,but the impact on the number of grains per panicle and seed setting rate did not reach a significant level.The effects of different nitrogen fertilizer levels and the interaction between nitrogen fertilizer levels and planting density on the effective panicle number,grain number per panicle,seed setting rate,and yield of Shunda 135 were not significant.The treatment with a planting density of 25 cm×14 cm and pure nitrogen application rate of 150 kg/hm2 had the highest actural yield,reaching 9 633.45 kg/hm2.In the demonstration in 2021 and 2022,under special early cultivation conditions,the yield of Shunda135 in large-scale demonstration square reached 10 563.00 kg/hm2 and 10 258.05 kg/hm2,respectively.Through two years of demonstration,the special early cultivation techniques for high yield of Shunda 135 have been summarized.
early indica riceShunda 135nitrogen applicationmechanical transplanting densityhigh yield techniques for special early cultivation
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