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通过对单季杂交粳稻 8优 16 1不同栽插本数与栽种方式、氮肥用量和施用方法的试验分析 ,初步明确了获得 8优 16 1高产相应的栽插本数和栽种方式、氮肥用量及施用方法。即在中等土壤肥力条件下 ,施纯氮 2 10～ 2 70kg/hm2 ,以采用平促施肥法为最佳 ;其次是两头法 ;在栽插密度为 2 5.0万穴 /hm2 时 ,每穴栽 1本 ,以行株距 2 4 .0cm× 16 .7cm最好 ;30 .0cm× 13.3cm次之。
Through the experiment and analysis of the number and planting methods, the amount of nitrogen fertilizer and the application methods of the eight-year-old japonica hybrid rice 8 You161, the planting numbers and planting methods for the high yield of 8Yuyue 16 1 were preliminarily determined, the amount of nitrogen fertilizer and its application method . That is, under medium soil fertility condition, pure nitrogen was applied at 210 ~ 270kg / hm2, which was the best by using the method of promoting the fertilization and fertilization, followed by the two-headed method. When the planting density was 25,000 / hm2, 1, the line spacing of 24 .0 cm × 16 .7cm best; 30 .0 cm × 13.3cm second.