Study on Seedling Quality and Yield of Machine Transplanting Early Rice with the Seedling Raising of Overlayed-Tray Emergence
Focusing on the problems of irregular seedling emergence,low rate of seedling growth and weak seedling,the differences of the seedling quality and yield of early rice seedling of overlayed-tray emergence by machine transplanting(T)and traditional seedling rearing(NT)were compared.The results showed that compared with NT treatment,the emergence of T treatment was 4-6 days earlier,and the emergence rate was increased by 22.8％.The seedling establishment rate of T treatment was 75.0％,which was 13.3 percent higher than that of NT treatment(61.7％).Compared with NT treatment,T treatment reduced plant height by 1.4 cm,leaf age and green leaf number increased by 0.26 and 0.27,respectively.Plant height,leaf age and number of green leaf uniformity were increased by 7.9,9.2 and 3.3 percent,respectively.The yield was increased by 10.7％,mainly due to the increase of effective panicle number and grain number per panicle.
Early riceMachine transplantingOverlayed-tray emergenceSeedling raisingSeedling establishment rateYield
NETL
NSTL
万方数据
