Here is effective rice spike number.

这是水稻有效稻穗数。

youdao

And it was more significant to achieve higher yields by increasing grain number per spike than by enhancing spike number per unit area.

通过增加穗粒数来实现高产比增加单位面积穗数意义更大。

youdao

Under different water regimes, spike number per plant (SNP), effective spikelet per spike (ESPS) and peduncle length (PLE) contribute a lot to the stable grain yield.

不同水分条件下，植株稳产性主要受单株穗数、有效小穗数及穗下节长的影响；

youdao

First,the Labor Department reported a spike in the number of Americans filing for jobless benefits.

VOA: standard.2010.05.20

Although the U.S.jobless rate continues to spike higher, the actual number of Americans who lost jobs during the month was the smallest since last September, the fourth consecutive month in which the pace of job losses slowed.

VOA: standard.2009.06.07

This may also have contributed to a recent spike in the number of Afghan security forces turning their guns on their own Afghan colleagues.

CNN: Shootings by Afghan forces take growing toll on NATO troops

It was a spike in the number of phone calls we received at our offices from panicked investors, and in some cases their financial advisors.

FORBES: Market's Meltdown Turned Me Into A Kid On A Banana Seat

Investors Intelligence reported a spike in the number of buying climaxes over the past several weeks, with 530 occurring two weeks ago and 71 last week.

FORBES