The growth and grain yield of summer maize in three kinds tillage management of no tillage, moldboard plowing and sub-soiling under two conditions of stubble mulch and no mulch have been conducted.

对小麦机械收获后残茬覆盖与不覆盖两种条件下免耕、翻耕和间隔深松三种土壤耕作方式夏玉米的营养生长及籽粒产量进行了研究。

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The results showed that EM microbial compost increased winter wheat and summer maize yields significantly.

结果表明：em微生物堆肥能明显增加冬小麦和夏玉米的产量。

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The crop water stress index (CWSI) model for monitoring summer maize water stress in North China Plain (NCP) was set up in this paper.

探讨并建立了适合于中国华北地区夏玉米水分状况监测的作物水分胁迫指数(CWSI)模型。

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Rain over the summer has meant a poorer quality of grass silage, and the farm's maize crop is also expected to produce lower yields when it is harvested in the coming weeks.

BBC: Richard Downes