Corn harvests are somewhat better , but also down sharply .

玉米收成还要好一点，但也减产厉害。

In vietnam , bad weather and pest outbreaks hurt harvests .

在越南，恶劣的天气和虫灾的爆发严重损害了粮食收成。

Even with good harvests , the state cannot feed its 25 million people .

即使有好收成，这个国家也无法养活它那2500万的国民。

Bad harvests in latin america and rising chinese demand have added to the price pressure .

拉美收成欠佳和不断增长的中国需求也进一步增加了大豆价格面临的压力。

These can improve harvests , reduce disease and help with pest control by attracting helpful insects .

这些组合可以提高收成、减少疾病，并且通过吸引益虫来帮助控制虫害。