1、中国小麦区域氮磷钾肥推荐用量及肥料配方研究

在总结分析了2005-2010年在中国小麦主产区进行的各1 575、4 232和3 924组的氮、磷和钾肥肥效试验，并在参考有关文献资料的基础上，将中国小麦主产区分为7个施肥亚区，并对这些区域的氮磷钾肥优化用量及肥料配方进行研究。

2、Optimum Nitrogen, Phosphorous, and Potassium Fertilizer

In this study, a field experiment was performed to investigate the effects of N, P, and K on the growth, nutrient use efficiency, microbial diversity, and composition of C. morifolium. Significant relationships were evident between N application rates, C. morifolium nutrient use, and plant growth.

3、Optimizing nitrogen, phosphorus, and potassium fertilization regimes to

We hypothesized that a reasonable N, P, and K fertilizer application regimes under DRFM could improve maize yield and resources utilization efficiencies.

4、Effect of nitrogen, phosphorus and potassium fertilization management

We recommend that the optimum fertilization ratio of Sapindus mukorossi was 0.96Kg N, 0.80Kg P and 0.64Kg K per plant. Reasonable fertilization can improve soil fertility and leaf physiological traits, while excessive fertilization has negative effects on soil fertility, leaf physiology and yield.

Optimized Application of Nitrogen, Phosphorus, and Potassium Enhances

Abstract The unreasonable application of nitrogen (N), phosphorus (P) and potassium (K) fertilizers not only leads to resource waste and environmental problems, but also affects the normal growth, development, and yield formation of wheat.

Effects of combined application of nitrogen, phosphorus, and potassium

The balanced nitrogen, phosphorus and potassium fertilizers at an application rate of 150 kg N ha - 1, 120 kg P 2 O 5 ha - 1, 90 kg K 2 O ha - 1 in the planting area of QTP was found to be the optimum fertilization amount for increasing seed yield, seed quality and net income.

Effects of Combined Application of Nitrogen, Phosphorus and Potassium

Formula fertilization can significantly promote crop growth, release high yield potential, improve water and fertilizer utilization efficiency, improve economic benefits and soil fertility, so itʼs the recommended fertilization mode.

A Facile Synthesis and Characterization of new Nitrogen, Phosphorus

Macronutrients such as Nitrogen, Phosphorous and Potassium were recognized for the supply of important nutrients to all crops. At present more chemical fertilizers used by farmers to produce higher yield and augment reasonable efficiency.

The optimum application amount and ratio of nitrogen, phosphorus, and

Objectives This study aimed to investigate the optimum combination of nitrogen (N), phosphorus (P), and potassium (K) fertilizers for the growth and effective component accumulation of Astragalus membranaceus var. mongholicus in northern Shaanxi.

Optimizing nitrogen, phosphorus, and potassium fertilization

However, little is known about reasonable application amounts of nitrogen (N), phosphorus (P), and potassium (K) fertilizers for maize under this planting pattern, and local farmers applying unreasonably large fertilizer amounts results in wasted resources and environmental pollution.

Nitrogen (N), phosphorus (P), and potassium (K) are three crucial nutritional elements for plant growth, each playing distinct roles within plant organisms. Properly proportioning these fertilizers can effectively promote plant growth and development, enhancing yield and quality. The following are detailed recommendations for NPK fertilizer proportioning:

1. Nitrogen Fertilizer: Nitrogen forms the foundation of plant growth and development, being essential for photosynthesis and protein synthesis. Nitrogen fertilizers increase chlorophyll content, enhance photosynthetic efficiency, stimulate root system development, and promote tillering and branching. nitrogen application should be adequately increased to meet growth demands, typically accounting for 30%-50% of total fertilization.

2. Phosphate Fertilizer: Phosphorus promotes robust root systems, strengthens disease resistance, and improves water and nutrient absorption. It also facilitates flower bud differentiation and fruit quality. Thus, phosphate application should be appropriately increased, generally comprising 10%-20% of total fertilization.

3. Potassium Fertilizer: Potassium enhances stress resistance, bolsters defense against pests and diseases, and strengthens roots and stems. It additionally aids in the uptake of nitrogen and phosphorus, boosting yield and quality. Hence, potassium application should be suitably increased, usually representing 10%-20% of total fertilization.

4. NPK Proportioning: In agricultural production, optimizing NPK ratios based on soil fertility, crop nutrient requirements, and climatic conditions is vital. Generally, ratios of 1:0.5:0.5 or 1:1:1 are recommended, balancing nutrient needs while preventing deficiencies or excesses.

5. Fertilization Methods: To maximize fertilizer efficiency, scientific application is key. Combining nitrogen with phosphate or potassium can enhance nitrogen utilization. Following the "small doses, multiple applications" principle, adjust fertilization according to growth stages and soil conditions.

6. Combining Organic and Chemical Fertilizers: Organic fertilizers, rich in diverse nutrients, improve soil structure and fertility. Integrating organic with chemical fertilizers enhances efficiency, reduces environmental impact, and sustains agricultural productivity.

7. Timing of Fertilization: Fertilization timing significantly affects growth and yield. Spring applications stimulate growth, summer ones replenish nutrients lost under heat, and autumn applications prepare plants for subsequent years. Tailor applications to crop cycles and weather patterns.

rational NPK proportioning is pivotal for optimizing plant growth and yields. Practical implementation should consider soil fertility, crop needs, and climate, adopting scientific management and formulation strategies. By harmoniously combining fertilizers, we ensure balanced nutrition, elevate efficiency, minimize costs, and foster sustainable agriculture.