Plant N

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；

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。

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。

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。

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.

等于或者大于200kg/hm2的施氮量将超过小麦和多花黑麦草植株吸氮量，导致土壤不同土层硝态氮的大量累积，构成N淋溶的潜在危险。

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

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%。

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；

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。

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 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。