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1995～1996年在扬州春播苏玉糯1号,总施氮量225kg·hm-2.基苗肥与穗肥用量比为1∶2,其中基苗肥又分基施、1叶展施、4叶展施3个水平,穗肥分7叶展施、10叶展施2个水平,研究其对生产性能的影响.结果表明:基苗肥基施、穗肥7叶展施的处理产量最高,比其他处理增产13.52%～3381%.其中基苗肥基施比1叶展施、4叶展施分别增产12.39%、18.58%;穗肥7叶展施比10叶展施的处理增产11.20%.增产的主要原因促进了壮苗早发,培壮了茎秆,增加气生根数和穗粒数,提高了叶系的净同化率,提高了粒叶比与双穗率,从而提高群体的物质积累量和籽粒产量
From 1995 to 1996, the sowing of Suyu Nuo 1 in spring sowing in Yangzhou was carried out, with a total amount of 225 kg · hm-2 of nitrogen applied. The ratio of basal fertilizer to panicle was 1: 2, in which basal fertilizer was divided into basal application, The results showed that the treatment yield of seedling basal fertilizer, basal application of 7 leaves of panicle fertilizer was the highest And the yield was 13.52% ~ 3381% higher than other treatments, among which, the base fertilizer application rate increased by 12.39% and 18.58% 11.20% .The main reason of increasing production is to promote early seedling growth, cultivate stalks, increase the numbers of aerial roots and grains per spike, improve the net assimilation rate of leaf system, increase the ratio of grain-leaf ratio and double-tassel, thus improve Mass accumulation of material and grain yield