Runoff and sediment production were significantly affected by different previous crops collocation.
不同的前作作物搭配对产流产沙存在显著的影响。
Fertilizers enhance the natural fertility of the soil or replace the chemical elements taken from the soil by previous crops.
肥料能提高土壤的肥力，或补充土壤中被以前作物吸收的化学元素。
The others such as previous crops, sowing way for maize, cropping system and the climate were indirect factors, which affected the sowing date or amount of planthopper.
前茬作物、播种方式、耕作制度和气候条件等都通过影响玉米的播期或灰飞虱的发生数量来间接影响当地或当年病害发生的轻重。
I have now grown five crops and each has been better than the previous one.
我现在种了五种庄稼，每一种都比前一种好。
Previous studies predicted massive releases of organic carbon from fields converted from grass to corn or other energy crops.
之前的研究表明，由草地转化成玉米地或其他能源作物用地的农田会释放出大量有机碳。
Fortunately, bumper crops were harvested in non-flooded areas of Australia, and the winter crop harvest in country was up 19% over the previous year’s crop, and was the biggest since 2003 – 2004.
幸运的是，非受灾情的粮食丰收缓和了小麦减产的影响，同时冬季粮产量较前年增长19%，达到自2003-2004年以来的最高水平。
Fortunately, bumper crops were harvested in non-flooded areas of Australia, and the winter crop harvest in country was up 19% over the previous year’s crop, and was the biggest since 2003 – 2004.
幸运的是，非受灾情的粮食丰收缓和了小麦减产的影响，同时冬季粮产量较前年增长19%，达到自2003-2004年以来的最高水平。
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