Under conventional till, crop response to spring soil water content was considerably greater than under zero till.
在常规耕作条件下，春季作物对土壤水份含量的响应要比免耕地大得多。
2
In summary, under zero till crop response to nitrogen levels in the spring was approximately twice as large compared to conventional till.
总之，在免耕地条件下，春季作物对土壤含氮量的反应大约是常规耕作的2倍。
3
When Smale reported back to the board in March, he didn't bring good news, as I recounted in Sixty to Zero, published this spring in soft-cover by Yale University Press.
当斯梅尔3月向董事会汇报时，他没带来什么好消息。 在今年春季耶鲁大学出版社（Yale University Press）出版的平装新作《60到0》（Sixty to Zero）中，我回顾了这一场景。