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- Abstract : The experiment used a perlite and drip-irrigation system to compared the effects of arbuscular mycorrhizal fungi on maize under different N and P supply levels. 摘要 ： 以珍珠岩为培养基质的半液培实验比较研究了不同氮磷水平营养液对接种丛枝菌根真菌玉米的影响。
- P supply levels 供磷水平
- The P supply of composted cattle manure was most stable during the experiment. 磷肥容易被高钙底土固定,效果低于有机肥。
- SHARK/FRESHWATER FISH： There are indications of downward price pressure on fresh Nile perch fillets, despite weaker supply levels. 鲨鱼/淡水鱼：尽管尼罗河鲈鱼鱼片的供给水平不高，但仍有?象表明的价格会下降。
- However for P supply, DAP was found superior source and rock phosphate tended to be equally effective source of P in acid laterite soil. 不过对于磷素供应来说，磷酸二铵是最好的来源，磷矿粉在酸性红壤土上同样有效。
- Both hybrid rice and conventional rice absorbed more NH4+ under lower N and K supply levels and preferred to NO3- under higher N and K supply levels. 在低氮、钾养分时，水稻在生育后期对铵态氮吸收较多，而在高氮、钾条件下，则对硝态氮有较大的吸收。
- Accordingly AOU was negatively related to P when P in the water column was supplied from outer sources and positively related to P when there was no P supply. 水体中的磷得不到补充时,AOU同磷呈现正相关。
- The article reviewed Liaoning commissariat to produce state and development course, elaborated stability to increase the value of food supply level. 本文回顾了辽宁粮食生产状况及发展历程，阐述了稳定提高粮食供给水平的重要性。
- Long-term fertilization could increase the P supply amount by SMB-P, there was a significant correlation between P supplying amount by SMB-P with maize yield and P uptake. 玉米生长季内土壤微生物量磷的动态变化呈先上升后下降的趋势，其含量最大值出现在玉米生长中后期；
- With increasing P or Al supply, Al-induced citrate exudation increased, while Al accumulation in soybean roots decreased in parallel with the decrease of P supply. 随着铝和磷含量的增加大豆根部铝含量增加，表明磷对有机酸分泌和铝积累都有显著的影响。
- Result showed that HPE maize performed a higher N and K absorption efficiency in low P regiment, its N, K absorption and dry matter accumulation were less affected by low P supply. 结果表明,磷高效利用型玉米氮钾素吸收和干物质积累受低磷处理的影响较小,表现出对氮、钾的高效吸收。
- These results indicate that the increase of P supply enhances the Fe fixtion in the apoplast of root during Fe acquisition, and consequently inhibites Fe transfer from root to shoot. 进一步分析发现，低磷处理的根系质外体铁含量显著低于中磷和高磷处理。
- irrigation and nitrogen supply levels 水氮供应
- The firm's tender for the supply of timber has been accepted. 那家商号的供应木材投标已被接受。
- I mind my p's and q's whenever I see him. 每当我见到他我都谨慎行事。
- In English, b, p, m and w are bilabials. 英语中的b、p、m、w为双唇音。
- Our country has a bountiful supply of food. 我们国家有充足的食物供应。
- In addition, we supply small parts for replacement. 此外，我们还提供备用小零件。
- The supply ships travelled in convoy. 补给船结队航行。
- AB and CD intersect at (the point) P. AB线和CD线在P点相交。
