Effects of Split Application of Fertilizer and Planting Density on Yield, Components of Yield and Other Agronomic Characters of Rice (II)

Abstract

The rice variety, Chianung 242 was subjected to 4 levels of fertilization and two levels of planting density arranged in a 4×2 factorial oxperiment with four replications. The experiment was conducted at Chiayi Agricultural Experiment Station in the first crop of 1964. Data on grain yield, components of yield and several other agronomic characters were taken to analyze the effects of the treat-ments as well as their interactions. 本試驗仍分肥料施用法與栽植密度兩因子。肥料施用法（第一因子）分 4 個變級，即慣行施肥法（基肥，N 1/2 , P , K全量，全層施肥；第一次追肥， N l/2於插秧後30日施用），分施法1（基肥，N l/5, P , K 2/3，全層施肥；第一次追肥，N 5/2於插秧後30日施用；第二次追肥N 2/5, P , K l/3於插秧後60日施用），分施法2（基肥 N 4/10 , P , K 2/3，全層施肥；第一次追肥N 3/10，於插秧後30日施用；第二次追肥 N 3/10, P , K l/3於插秧後60日施用），與分施法3（基肥N 3/10, P 2/3, K 3/5，全層施肥；第一次追肥N 3/10於插秧後30日施用；第二次追肥N 3/10, P 1/3, K 2/5於插秧後60日施用；第三次追肥，N l/10於插秧後80日施用）。