Response of the black soil enzyme activities to different fertilizer applications.
Bibliographic record
Abstract
On the base of field experimentation and sampling,the status and diversity of enzyme activities relevant to cycle of C,N,P in the black soil from the Hailun Agroecological Experimental Station were tested.The results showed that soil enzyme acted as a biological catalyst in soil cycle,and its variation could be used as an indicator for soil fertility.The application of different organic and inorganic fertilizers significantly affected the soil enzyme activities under the field conditions.N fertilizer could increase invertase and protease activities,and organic fertilizer increased the organic contents and urease activity significantly.Urease activities were significantly correlated with different fertilizer applications and crops,and extremely significantly correlated with the interaction among crops and fertilizer application,which showed that urease activities could be used as the characteristic of fertilizer level under different crops and fertilizer applications.The activities of invertase,protease,phosphatase and urease under waste land were less than those of the continuous tillage,which indicated that catalase was less sensitive to tillage than the other four kinds of enzyme.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 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) | 0.001 | 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 source (direct Gemma or distilled Codex), 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".