1) density and fertilizers application
密度与施肥
1.
The results showed that density and fertilizers application had a certain effect on the flavor content and composition,main chemical composition and gland trichome of density.
采用同时蒸馏萃取、顶空分离前处理方法及气相色谱-质谱联用分析鉴定技术,对不同种植密度与施肥水平组合生产的原烟进行了定量测定,并对其主要化学成分和鲜叶的腺毛密度也做了测定,结果表明:密度与施肥对香味物质的成分与含量、主要化学成分和腺毛密度都具有一定影响,以A2B2处理的较好,其次是A2B3,A1B2和A1B3。
4) measures of density and fertilizer
密肥措施
5) fertilization regimes
施肥制度
1.
The composition of soil micro-aggregates is different under different fertilization regimes.
通过8年田间定位试验,研究了不同施肥制度下褐土及其微团聚体有机碳活性变化规律。
2.
The results showed that different fertilization regimes(fertilizer,fertilizer+ cattle manure,fertilizer + straw) could significantly increase the contents of organic matter,total nitrogen,total phosphorus,available nitrogen,available phosphorus and available potassium by 19.
结果表明,与对照相比,不同施肥制度(化肥、化肥+牛粪、化肥+秸秆回田)下土壤有机质增幅达19。
6) Fertilization system
施肥制度
1.
Adopting stanford mineralization rate method,the tested soils with different fertilization systems were aerobic incubated to study the nitrogen mineralization potentials(N0) and N-supplying capacity of soil.
采用Stanford矿化率法研究了长期不同施肥制度培育的土壤氮矿化势和供氮潜力。
2.
Study of nitrogen nutrition and fertilization system in film mulch Abstract Winter wheat with film mulch has some advantages like drought-resistant, moisture-maintain, and early mature and high yield.
本文针对地膜覆盖冬小麦抗旱保墒，早熟高产等优点，为更好地大面积推广此项技术，通过认真分析对比，以晋麦47、晋麦31等5个小麦品种为试材，研究了地膜覆盖麦田氮素养分动态、施肥效应、氮素的积累与分配及播种期、种植密度对肥、水措施的影响，最后系统地研究了地膜覆盖冬小麦的氮素施肥制度，包括各种肥料搭配，施氮量和施肥方式问题。
3.
Ammonia volatilization from double-rice cropping field in red paddy soil was determined in a closed air-flow chamber under different fertilization systems.
为系统地了解不同施肥制度下各生育期氨挥发损失的程度及规律,采用密闭室法对南方红壤地区双季稻田的氨挥发进行了监测。
补充资料：非密度制约因素(见密度制约因素)
非密度制约因素(见密度制约因素)
l焦非密度制约因素见生态因素、密度制约后
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条