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英文文献：Effects of Herbicide-Resistant Technology Fees on the Plant Population Decision for Cotton Production-抗除草剂技术收费对棉花种植群体决策的影响
英文文献作者：Larson, James A.,Roberts, Roland K.,Gwathmey, C. Owen
英文文献摘要：
This study evaluated effects on cotton net revenues of four herbicide-resistant technology policies used since 1996 by Monsanto. Results indicate that farmers may have an incentive to switch from narrow-row to wide-row cotton and to use a lower plant density when the technology fee is tied to the seeding rate.
本研究评估了孟山都自1996年以来采用的四种抗除草剂技术政策对棉花净收入的影响。结果表明，当技术费用与播种率挂钩时，农民可能会有动力从窄行棉花转向宽行棉花，并使用较低的种植密度。
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