The parasite population opposing verticalresistance may undergo stepwise development controlled by many genes.
生物种群可能要经历许多基因控制的步增发育。
2
Thus it can be seen that the verticalresistance of some rice varieties is affected by applications of nitrogen fertilizer, and some of them are more sensitive to nitrogen fertilizer.
由此可见，部分垂直抗性品种的抗病性是受氮肥量影响的，而且有些品种对氮肥很敏感。
3
The design of bored pile foundation is researched in calculations of floodgate structure. At the same time, the thesis discusses how to consider carrying capacity of verticalresistance between piles.