Impact of alternative methyl bromide technology on soil nutrient and microbial biomass carbon in tomato greenhouse
Bibliographic record
Abstract
Four alternative technologies to the use of methyl bromide with ordinary film(MB+PE),metham sodium with ordinary film(MS+PE),MB and MS dosage reduction by virtually impermeable films(VIF)and soil solarization in combination with selected biological control agents(SS+BCA),were chosen for application to an experimental site in Qingzhou,Shandong Province from 2001 to 2003.Soil nutrient indices and microbial biomass C were respectively investigated.Results for 2001～2002 show that soil pH,available P and K and cation exchange capacity(CEC)have no significant difference among the treatment plots.Methyl bromide fumigation measures under PE and VIF prompt release of NH+4-N.Soil microbial biomass C decreases after soil disinfection and has no significant difference among treatments with MB+PE,MB+VIF,MS+PE and MS+VIF.Results for 2002～2003,when organic fertilizers were applied,are similar to that for 2001～2002,except that SS+BCA promotes NH+4-N release and decreases microbial biomass C.In the two years of 2001～2003,microbial biomass C shows significant seasonal variation and application of organic fertilizer accelerates microbial biomass C turnover.
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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".