The Evolution of Farmland Fertilization and Manage Tactics in Haian
Bibliographic record
Abstract
The evolution of farmland fertilization and the effect on soil fertility from 1950 to 2005 was studied based on peasant household investigation and macro-analysis,and fixed field monitor and general survey in Haian county,Jiangsu province. It indicated that fertilization constitution in Haian county developed from the one predominating in organic fertilizer in the early PCR into the present one with a combination of organic-inorganic fertilizer,in which the proportion of inorganic fertilizer being slightly higher than organic one. The ratio of chemical nitrogen (N)∶phosphorus (P2O5)∶potassium (K2O) varied from 1∶0∶0 to 1∶0.2∶0.21. The total amount of fertilizer increased 32.2 times,and the amount of phosphorus and potassium increased significantly. The main fertility indicators such as organic matter,total nitrogen,available phosphorus and available potassium increased steadily. Due to the increase of chicken manure application,enrichment effect of phosphorus is significant. Henceforth,more attention should be paid to apply potassium fertilizer and high quality organic fertilizer in order to enforce quality management of cultivated land and realize agricultural sustainable development.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".