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汕优63是珍汕97×明恢63配组成的杂交中籼新组合,具有丰产潜力大、米质好的特点,在我县已大面积推广种植。为了探求汕优63经济有效的栽培措施,1985年在司徒乡进行了肥料密度试验。 肥料试验设三个水平:每亩纯氮12.5公斤(A_1)、15公斤(A_2)、17.5公斤(A_3);密度设三个水平:每亩1.8万穴(B_1)、2.2万穴(B_2)、2.6万穴(B_3)。田间排列以肥料为主区密度为副区的二因素裂区排列,重复三次。小区面积20平方米(4×5米)。5月10日落
Shanyou 63 is Zhenshan 97 × Minghui 63 with a new medium-indica hybrid combination with high yield potential, good quality of rice, in my county has a large area to promote planting. In order to explore Shanyou 63 cost-effective cultivation measures, in 1985 in Stuart fertilizer density test. Fertilizer experiments were conducted at three levels: 12.5 kg of pure nitrogen per acre (A_1), 15 kg (A_2) and 17.5 kg (A_3) of pure nitrogen. The density was set at three levels: 18,000 B ~ , 26000 points (B_3). Field arrangement of fertilizer-based district density of the sub-district of the two-factor split zone arrangement, repeated three times. Residential area of 20 square meters (4 × 5 meters). May 10 fall