Related Experiment Video
Updated: Feb 9, 2026
12:24
Improving the Success Rate of Protein Crystallization by Random Microseed Matrix Screening
Published on: August 31, 2013
18.3K
Improving Rice Modeling Success Rate with Ternary Non-structural Fertilizer Response Model
Juan Li1, Mingqing Zhang1, Fang Chen2,3
1Soil and Fertilizer Institute, Fujian Academy of Agricultural Science, Fuzhou, 350013, China.
Scientific Reports
|June 15, 2018
Summary
A new ternary non-structural fertilizer response model (TNFM) improves rice fertilization accuracy over the traditional ternary quadratic polynomial model (TPFM). This enhanced model offers better applicability and addresses issues like bias and multicollinearity in fertilizer response modeling.
Area of Science:
- Agricultural Science
- Agronomy
- Soil Science
Background:
- Fertilizer response modeling is crucial for precise rice fertilization.
- Traditional models like the ternary quadratic polynomial model (TPFM) have limitations, including low success rates and applicability issues.
Purpose of the Study:
- To develop an improved fertilizer response model for rice.
- To address the limitations of the TPFM, specifically bias and multicollinearity.
- To enhance the accuracy and applicability of fertilizer response modeling.
Main Methods:
- Established a ternary non-structural fertilizer response model (TNFM).
- Utilized experimental data from N, P, and K fertilized rice fields.
- Compared TNFM performance against TPFM using 88 rice field trials in China.
Main Results:
- TNFM significantly improved modeling success rates compared to TPFM.
- A higher proportion of TNFMs (40.9%) satisfied plant nutrition laws versus TPFMs (26.1%).
- Parameters N0, P0, and K0 from TNFM serve as effective indicators of yield potential.
Conclusions:
- The TNFM offers superior fitting accuracy and a wider application range than TPFM.
- TNFM effectively resolves bias and multicollinearity issues present in TPFM.
- The developed TNFM advances metrological fertilization techniques for rice cultivation.
Related Concept Videos
02:17Ecological Succession
21.6K
Ecological succession is influenced by the processes of facilitation, inhibition, and toleration. Facilitation occurs when early successional species create more favorable ecological conditions for subsequent species, such as enhanced nutrient, water, or light availability. In contrast, inhibition happens when early successional species create unfavorable ecological conditions for potential successive species, such as limiting resource availability. In some cases, later successional species...
21.6K
01:07Structure of Benzene: Kekulé Model
12.0K
In 1865, August Kekule suggested the structure of benzene according to the structural theory of organic chemistry based on the three assertions—formula of benzene is C6H6, all the hydrogens of benzene are equivalent, and each carbon must have four bonds due to its tetravalency.
He proposed that benzene has a cyclic structure of six carbon atoms attached to one hydrogen atom each, with three alternating pi bonds.
He proposed that benzene has a cyclic structure of six carbon atoms attached to one hydrogen atom each, with three alternating pi bonds.
12.0K
02:41Responses to Drought and Flooding
12.1K
Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
12.1K
01:18Structure of Benzene: Molecular Orbital Model
12.7K
According to the molecular orbital (MO) model, benzene has a planar structure with a regular hexagon of six sp2 hybridized carbons. As shown in Figure 1, each carbon is bonded to three other atoms with C–C–C and H–C–C bond angles of 120°. The C–H bond length is 109 pm, and the C–C bond length is 139 pm which is midway between the single bond length of sp3 hybridized carbons (154 pm) and sp2 hybridized carbons (133 pm).
12.7K
01:38Fertilization
91.7K
During fertilization, an egg and sperm cell fuse to create a new diploid structure. In humans, the process occurs once the egg has been released from the ovary, and travels into the fallopian tubes. The process requires several key steps: 1) sperm present in the genital tract must locate the egg; 2) once there, sperm need to release enzymes to help them burrow through the protective zona pellucida of the egg; and 3) the membranes of a single sperm cell and egg must fuse, with the sperm...
91.7K
02:55Temperature Dependence on Reaction Rate
89.2K
The Collision Theory
Atoms, molecules, or ions must collide before they can react with each other. Atoms must be close together to form chemical bonds. This premise is the basis for a theory that explains many observations regarding chemical kinetics, including factors affecting reaction rates.
The collision theory is based on the postulates that (i) the reaction rate is proportional to the rate of reactant collisions, (ii) the reacting species collide in an orientation allowing contact between...
Atoms, molecules, or ions must collide before they can react with each other. Atoms must be close together to form chemical bonds. This premise is the basis for a theory that explains many observations regarding chemical kinetics, including factors affecting reaction rates.
The collision theory is based on the postulates that (i) the reaction rate is proportional to the rate of reactant collisions, (ii) the reacting species collide in an orientation allowing contact between...
89.2K