1、Increased organic fertilizer significantly increases leaf nitrogen and

Our findings indicated that organic fertilizer significantly increased leaf N and P contents but had no effect on leaf C content.

2、Combined applications of organic and synthetic nitrogen fertilizers for

Combined applications of organic and synthetic N fertilizers decreased net GWP at field level. The combined application of organic and synthetic nitrogen (N) fertilizers is being widely recommended in China’s vegetable systems to reduce reliance on synthetic N fertilizer.

3、Substituting partial chemical nitrogen fertilizers with organic

Substituting partial chemical N with organic fertilizer (SP) is an environmentally friendly and sustainable fertilization practice. However, the appropriate rate of SP in rainfed maize cropping systems in semi-arid regions of China is unknown.

4、Optimizing Effects of Organic Farming and Moderately Low Nitrogen

Reasonable nitrogen fertilizer management and cultivation methods can enhance the nitrogen supply and carbon sequestration capabilities of soil, which is beneficial for meeting the growth requirements of crops and alleviating environmental issues.

5、Reduction of nitrogen fertilizer and simultaneously application of

Reduction of nitrogen fertilizer and simultaneously application of organic fertilizer (RNF) is regarded as an essential approach for realizing sustainable agricultural development.

Combination of nitrogen and organic fertilizers reduce N

Here, we investigated the optimal management of N fertilization by examining the combined effects of organic and N fertilizers on wheat yields, quality, and N 2 O emissions.

Effects of Different Organic Fertilizer Substitutions for Chemical

We aimed to study the effects of organic fertilizer substitutions for chemical nitrogen fertilizer on soil fertility and nitrogen use efficiency in order to clarify the effectiveness of the available nutrient management measures in improving soil quality and increasing foxtail millet yield.

Organic fertilization strengthens multiple internal pathways for soil

Organic carbon based amendments can improve soil structure and fertility, as well as increase composition and diversity of soil microbial community. One of the major functions of improving soil fertility is to achieve effective nitrogen (N) management and mineralization.

Effects of different organic materials and reduced nitrogen fertilizer

Future fertilization strategies should continue incorporating organic fertilizers and further research to enhance soil phosphorus and potassium contents, thus improving fertilization...

Long

Studies have demonstrated that integrating organic and chemical fertilizers can improve NUE and reduce nitrogen loss, offering a more sustainable alternative to relying solely on chemical fertilizers (Zhuang et al., 2019).

The nitrogen content in organic fertilizers varies depending on their type, source, and preparation methods. Generally, the nitrogen content in organic fertilizers is relatively low, but it can still provide essential nutrients for plants.

1. Sources of Organic Fertilizers: Organic fertilizers mainly originate from animal and plant residues, manure, animal and plant fats, etc. These substances release certain amounts of nitrogen during decomposition. Additionally, some microorganisms can produce nitrogen during the decomposition of organic matter.

2. Preparation Methods of Organic Fertilizers: There are various methods for preparing organic fertilizers, including composting, fermentation, and bio-fermentation. In these methods, microbial activity plays a crucial role. Microorganisms can convert elements like carbon, hydrogen, and oxygen in organic matter into nutrient elements such as nitrogen, phosphorus, and potassium, thereby increasing the nutritional value of the organic fertilizer.

3. Nitrogen Content in Organic Fertilizers: The nitrogen content in organic fertilizers differs based on their type and preparation methods. Generally, the nitrogen content is low but sufficient to provide essential nutrients for plants. For example, the nitrogen content in organic fertilizers prepared by composting usually ranges between 0.5% and 2%, while that in fertilizers prepared by fermentation may range between 1% and 5%.

4. Impact of Organic Fertilizers on Plants: Although the nitrogen content in organic fertilizers is low, it can still provide essential nutrients for plants. For most plants, an appropriate amount of nitrogen can promote growth and development. excessive nitrogen can lead to rapid plant growth, affecting its quality and yield. it is important to control the amount of nitrogen when using organic fertilizers to ensure healthy plant growth.

5. Comparison with Other Fertilizers: Compared to chemical fertilizers, organic fertilizers have several advantages. First, they are natural and free from harmful chemicals, making them environmentally friendly. Second, through microbial action, organic fertilizers can convert organic matter into nutrient elements, enhancing soil fertility. Additionally, they can improve soil structure and increase water and nutrient retention capacity.

6. Application of Organic Fertilizers: Organic fertilizers are widely used in agricultural production. They can be used as base fertilizers, topdressing fertilizers, or for foliar spraying. As base fertilizers, they can be mixed with farmyard manure to enhance soil nutrients. For topdressing, the application of organic fertilizers can be adjusted according to the plant's growth requirements to meet its nitrogen needs.

while the nitrogen content in organic fertilizers is relatively low, it can still provide essential nutrients for plants. When using organic fertilizers, it is important to control the amount of nitrogen to ensure healthy plant growth. Additionally, organic fertilizers can improve soil structure and enhance water and nutrient retention capacity.