养分平衡

从3个典型县域农田养分平衡来看，1980年后随着N、P肥施用量的增加，农田N素和P素出现大量盈余，K素则处于亏缺状态。

Results of nutrient balance from three counties showed that N , P in farmlands was obviously surplus with the increasing of N , P application from 1980 , and K was deficient at all time .

对甘肃省农田N、P、K养分平衡状况分析结果表明，甘肃省农田N、P、K养分平衡状况为N、P盈余，而K素亏损。

The farmland nutrient balance of nitrogen , phosphorus , and potassium in Gansu Province was studied and the results show that N , P in this region are surplus , K is at a loss .

为了培肥地力，模式养分平衡要求N盈余在40%以上，以实现绿洲农业生态系统养分良性循环。

In order to fertilize the soil fertility , the model of nutrient balance demands that the surplus of N should be over 40 % so as to achieve a good nutrient cycle in the oases agro-ecosystem .

同时，N、P、K、Si积累的平衡有利于干物质积累，干物质积累量随NBI（养分平衡指数）直线增加，随NDI（养分偏离指数）直线下降。

At the same time , balance of nitrogen , phosphorus , potassium and silicon accumulation was beneficial for dry matter accumulation , which linearly increased with increase of nutrient balance index and decreased with increase of nutrient deviation index .

建立了基于养分平衡的稻田处理污水承载量计算方法，提出基于养分动态模拟的与SPAD值动态模型的污水灌溉动态调控决策模型；4、建立了养猪场污水稻田利用的决策支持系统。

Put forward dynamic regulation decision model of wastewater irrigated based on nutrient dynamic simulation and dynamic simulation with SPAD . 4 、 Established decision Support System Utilization of Pig Farm Wastewater in Paddy Field .

ICMCS拥有层次化、组件化和智能化特征，由生育期、生物量、器官建成、分配与产量、水分及养分平衡等子模型框架、模型和模板等组件组成。

ICMCS has the characteristics of hierarchy , components and intelligence , is composed of sub-model frameworks , models and templates for growth period , biomass production , organ production , yield formation , water and nutrient balance .

我国农田系统中的氮素养分平衡出现明显的盈余。

In agriculture system , the N balance appeared evident surplus .

甘肃省农田氮磷钾养分平衡状况探析

Farmland nutrient balance of nitrogen , phosphorus and potassium in Gansu

山西中部菜田施肥状况及土壤养分平衡

Fertilizer Application and Nutrition Balance of Vegetable Field in Central Shanxi

泉州市耕地土壤氮磷钾养分平衡研究

Study on the NPK nutrient balance of cultivated soils in Quanzhou

农田生态系统养分平衡及其面源污染研究&以四川省为例

Nutrients Balance of Farm Eco-system and Its Nonpoint Source Pollution

麦-稻两熟集约生产土壤养分平衡与调控研究

Soil nutrient balance and adjustment under intensive wheat-rice double cropping

典型设施栽培地区养分平衡及其环境风险

Nutrient Balance and Its Environmental Risks in Typical Greenhouse System

云南大田不同轮作模式养分平衡现状研究

Study on Nutrient Balance of Different Rotation Models in Field of Yunnan

白菜、甘蓝养分平衡施肥技术研究

A Study on Nutrition Balance Fertilization Technology for Chinese Cabbage and Cabbage

养分平衡法在玉米测土推荐施肥中的应用效果

Application of Soil Nutrient Balance Method on Corn Fertilization Recommended

我国南方6省农田养分平衡现状评价和动态变化研究

Nutrient Balance of Agroecosystem in Six Provinces in Southern China

长期施肥对华北平原潮土作物产量及农田养分平衡的影响

The effects of long-term fertilization on crop yields and farmland nutrient equilibrium

小麦-玉米高产区肥料施用状况与养分平衡研究

Fertilizer Application and Nutrient Balance on Wheat and Maize in High Output Area

岩溶地区生态系统养分平衡研究

The nutrient balance of the ecosystem in Karst Area

四川盆地丘陵区农田养分平衡研究

Study on the Farmland Nutrients Balance in the Hill Zone of Sichuan Basin

北京市农田生态系统氮素养分平衡与负荷研究&以密云县和房山区为例

Nitrogen Nutrient Balance and Load in Agro-ecosystem of Miyun Fangshan County in Beijing

山西省主要农田施肥状况及典型县域农田养分平衡研究

Fertilizer Application Survey and Farmland Nutrient Balance of Representative Counties in Shanxi Province

坡耕地不同水土保持措施下的养分平衡和土壤肥力变化

Nutrient Balance and Soil Fertility Change in Different Conservation Measures on Sloping Field

农业系统中的养分平衡根据经济发展状况而有所不同。

Nutrient balances in agriculture differ with economic development .

氮钾肥配施对水稻产量和养分平衡的效应

Effects of combined nitrogen-potassium fertilization on the yield and nutrient balance of rice

长期不同施肥下杂交稻与常规稻的产量与土壤养分平衡

Yield of inbred rice and hybrid rice and soil nutrient balance under long-term fertilization

赤红壤在不同农作制中养分平衡的研究

A study of nutrient balance in different cropping systems on a lateritic red soil

优化施用钾肥对夏玉米产量及养分平衡的影响

Effect of Optimized Application of Potassium Fertilizer on Summer Corn Yield and Nutrient Balance

农田土壤养分平衡状况及其评价的试点研究

Nutrient Balance of Agricultural Soils and Their Evaluation