N supply equal to or greater than 200kg/ hm2 to exceed the application rate of wheat and annual ryegrass plant N uptake, It would resulted nitrate accumulated a lot in soil of different layers to form N leaching potential danger.

Plant N: P Stoichiometry: Variations of Chinese Higher Plants and a Preliminary Test by Field Experimentation

植物N：P计量化学：中国高等植物的分异规律与野外实验初步验证

The influence of plant N/ P, soil pH value on wetland plant species richness

植物N/P与土壤pH值对湿地植物物种丰富度的影响

The influence of plant N/ P, soil pH value on wetland plant species richness was studied through artificial control simulating test.

通过人工控制模拟试验，研究了植物中全氮与全磷之比（植物N/P）和土壤pH值与湿地植物物种丰富度的关系。

Appropriate rate of nitrogen promoted plant N uptake and utilization, and plant biomass and yields as well.

适量施氮促进玉米对氮素的吸收和利用，进而提高玉米生物量和产量；

Plant N accumulation in different cultivation practices varied, ranked as follows: supplementary irrigation film mulching rain-fed straw mulching.

不同栽培模式氮素累积量显著不同，表现为补充灌溉地膜覆盖雨养秸秆覆盖。

The highest peak was on the occasion of milking stage of the wheat plant n summer.

夏季蚜峰正值小麦灌浆时期，这是防治的关键期；

A significant positive correlation was found between soil microbial biomass N and soil biological, physical and chemical properties, plant N, P and K contents, soil moisture, and grain crude protein.

微生物量N与黑土生物、理化特性，植物氮、磷、钾有极显著的正相关关系，与土壤含水量、籽粒粗蛋白含量呈显著正相关关系。

It was shown that both N and PGRs applications had significant effect on plant N content, accumulation and utilization.

结果表明，氮肥施用时间和植物生长调节剂对小麦植株氮含量、积累和利用有显著影响。

The digital image analysis technique can be used as a tool for cotton plant N status diagnosis.

应用数字图像分析技术可以作为棉花氮素营养诊断的方法。

Compared with CI treatment, plant N and P use efficiency in CAI treatment was enhanced by 25.1% and 25.3%, respectively.

交替方式氮、磷利用效率比常规方式分别提高25.1%，25.3%。

As soon as I went out, I came face to face with Lao Wang.

我一出门, 劈头遇上了老王.

A bit irritated , he cut her off and asked, What school did you go to originally?

他有点烦, 就劈头插上一句:“你原来是哪个学校的? ”

Chen, claimed it was defective, despite damage that looked suspiciously like the result a head-on collision .

陈先生是这辆汽车的主人, 他断言该车是有缺陷的, 尽管车子疑似因 迎头 相撞而受到损坏.

Career and cupid have collided head on.

事业与爱情迎头相撞.

The two buses collided head on.

那两辆巴士迎头相撞.

The sled struck tree head-on.

雪橇“迎头”撞上那棵树.

The motorcycle ran head-on into the truck.

那台重型机车 迎头 撞向那台卡车.

The ship struck the rocks head on.

那艘船迎头撞上了岩石.

Tomorrow, they will be with us head-on collision.

明天, 他们还会跟我们 迎头 相撞.

The surf broke on the rocks.

迎头浪冲上岩石四下迸溅.