1) fertilizer gradient
施肥梯度
1.
The effect of fertilizer gradients on vegetation characteristics in alpine meadow;
施肥梯度对甘南高寒草甸植被特征的影响
2.
Effects of fertilizer gradients on productivity and species diversityin a degraded alpine meadow;
不同施肥梯度对甘南退化高寒草甸生产力和物种多样性的影响
2) nitrogen gradient
氮肥梯度
3) phosphorus gradient
磷肥梯度
4) 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。
5) 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。
6) fertilization systems
施肥制度
1.
Effect of fertilization systems on microbes in the paddy soil;
不同施肥制度对稻田土壤微生物的影响研究
2.
A 5─years period of locating study was made on the fertilization systems of shifting agricuIture,or-ganic agricuIture,petroleum agricuIture,and organic─inorganic agrlculture,The merits and demerits of the fer-tilization systems were evaluated according to the parameters of rice productivity,fertilizer effec,nutrient useefficient,nutrient balance and evolution of paddy soil etc.
以南方红壤稻作区为背景，对“移耕农业”、“有机农业”、“石油农业”和“有机一无机结合农业”等施肥制度进行了为期５年的定位试验研究。
补充资料：G(?)teaux梯度
G(?)teaux梯度
Gateaux gradient
‘凌如以梯度【珑加倒优脚曲斌;raTo rp”脱.TI，田-咖李回H的俘甲f夺丁卓x0牛的 H中与f在x。的C自妞.玫导数(G云姗uxderi珊tiVe)f。(x。)相等的向量.换句话说，G舀teaux梯度由公式 f(x。+h)二f(凡)+(无(x。)，h)+。(h)定义，其中。(th)/t~0，当t~0.在”维Eodid空间中C冶姗以梯度f。(x。)为具有坐标 了叮(x。)___盯(凡)、 \口x:”口x，了的向量，并简称为梯度(脚djent).C冶如ux梯度概念可以推广到下列情形:X为侧组日的n流形(有限维)或无穷维Hilbert流形，而f为X上光滑实函数.f在其C冶如以梯度方向上的增长大于过此点任何其他方向的增长. B.M.THxo栩叼Po.撰郑维行译沈永欢、王声望校
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