氮高效

Effect of plastic film mulching on crop yield and nitrogen efficiency in semiarid areas. 半干旱地區(qū)地膜覆蓋對(duì)作物產(chǎn)量和氮效率的影響。

Differences also existed in terms of Nitrogen utilization efficiency (NUE) and Nitrogen efficiency ratio (NER) between cultivars and among PGR treatments. 氮利用效率(NUE)和氮效率比(NER)在基因型和不同植物生長劑處理之間存在著顯著差異。

The difference in nitrogen efficiency among 48 cotton varieties was studied in pot experiment by analyzing the plant height, dry matter weight and N content at seeding stage. 摘要通過砂培盆栽試驗(yàn)，分析棉株的株高、干物重以及全氮含量，研究了48個(gè)棉花品種苗期氮效率的差異性。

Results showed that increasing nitrogen application rate increased total N uptake,but decreased the percentage of nitrogen exported(PNE)from vegetative organs,nitrogen harvest index(NHI)and nitrogen efficiency for grain production(NEGP). 結(jié)果表明 ,施氮量增加 ,水稻吸氮量增多 ,但營養(yǎng)器官的氮轉(zhuǎn)運(yùn)率、氮收獲指數(shù)和產(chǎn)谷效率顯著下降 ;

Air consists chiefly of nitrogen. 空氣主要由氮?dú)饨M成。

This is a highly efficient new heating system. 這是個(gè)高效的新取暖系統(tǒng)。