除草剂Starane

Starane 是 Dow 化学公司开发的除草剂,系输导性能良好的非苯氧类除草剂。对范围广泛的阔叶植物芽后叶面施药有很高的活性。对敏感杂草施药后常常几小时就能引起植物生长素型的特征反应。对谷物田主要阔叶杂草猪殃殃和繁缕特别有效。对果园、葡萄园和牧场中的多年生深根杂草田旋花、篱天剑和酸模属杂草的防除也很有希望。初步试验结果表明,它在林地于有效剂量下对云杉属和松属有选择性,能防除难除的阔叶灌木。

茎直黄芪化学防除试验

本试验选用国产2.4-DJ酯和美国产Starane两种农药采用不同浓度处理，对茎直黄芪进行了田间灭除。试验证明，2.4-DJ酯以3000～3750μgg-1，每亩用药液50～70ml，对茎在黄芪有良好的杀灭效果，且药害很小;7500μg·g－1以上浓度虽对茎直黄芪灭除效果达100％，但药害严重;美国产Starane各种浓度处理，对茎直黄芪均有优良杀灭效果，660μg·g－1以上浓度当年防除效果达99％以上，且未发现药害现象。

陶氏益农新型除草剂Spitfire(双氟磺草胺和氟草烟复配剂)

陶氏益农将于2011年推出一个新型谷类除草剂,其中的活性成分为双氟磺草胺和氟草烟,与另一个除草剂产品Starane XL中的活性成分相同;但是其中双氟磺草胺的含量增加了2倍,达到5 g/L,

Distribution and Comparison of Steranes From Blue-Green Algae Under Different Simulated Conditions

Two remarkably opposite distribution patterns of sterane series are revealed from living blue-green alga (or cyanobacterium) under different simulated conditions. The organic matter derived from hydrous-pressure pyrolysis of the blue-green alga is characterised by the predominance of C_(27) sterane over C_(29) sterane; this is coincident with traditional thought. On the contrary, the organic matter derived from artificially silicified microfossils of the blue-green alga is characterised by the predominance of C_(29) sterane over C_(27) sterane; this appears to be an unusual distribution pattern. Such kind of unusual steranedistribution also has been foundin the samples of Precambrian cherts with abundant well-preserved microfossil algae. All these imply that the special source of organisms and the medium, procedure or conditions of simulated pyrolysis may result in the different distribution patterns of sterane biomarkers.

陶氏益农推出谷类除草剂Spitfire

陶氏益农将于2011年推出一个新型谷类除草剂，其中的活性成分为双氟磺草胺和氟草烟，与另一个除草剂产品Starane XL中的活性成分相同，但是其中双氟磺草胺的含量增加了2倍，达到5g／L，因此可以使得产品在较低和更多变的气温下发挥作用。