The rice height, effective tillering and blighted grains increased as the fertilizer was increased.

水稻株高、有效分蘖、空秕率均随施肥量增加而增加。

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The results showed that : (1) The effective tillering and bligthed grains were affected by the marginal effect, its marginal effect index was 1.6564 and 1.4034;

结果表明： （1）边际效应主要影响有效穗、秕粒数，其边际效应指数值分别为1.6564．和1．4034；

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In addition, fertilizer deep placement with the machinery can make rice grow more steadily, have a more suitable stem height, increase effective tillering and effective ears.

另外，机械化肥深施还可以增加水稻有效分蘖和有效穗，使作物生长平稳，株高适当。

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