中文：

2017年玉米价格走势受到多种因素的影响，包括国内玉米市场供求关系、政策调整、贸易形势以及天气等因素。总体来说，玉米价格在2017年呈现波动上涨的趋势。

一方面，国内玉米市场供求关系是影响玉米价格的主要因素。2017年，国内玉米产量下降，而需求却不断增长，尤其是在生猪养殖、深加工等领域的需求增长较快，导致玉米市场供应偏紧，价格上涨。

另一方面，政策调整也对玉米价格产生了重要影响。2017年，政府继续推进农业供给侧结构性改革，实施了一系列政策措施，包括去库存、调结构、补短板等，这些政策对玉米价格也产生了积极的影响。

此外，贸易形势也对玉米价格产生了影响。由于国际玉米价格高于国内价格，导致国内玉米进口量增加，从而对国内玉米市场价格造成一定的压力。然而，由于国内玉米供应偏紧，贸易形势的影响相对有限。

最后，天气因素也对玉米价格产生了一定的影响。2017年夏季，中国多地遭受洪涝灾害，导致玉米生长受到影响，市场价格一度上涨。

总体来说，2017年玉米价格波动上涨的趋势明显。对于农民来说，虽然受到天气等因素的影响，但总体上玉米种植效益还是有所增长的。而对于消费者来说，玉米价格的上涨可能会对部分农产品价格产生一定的影响。

英文：

The price trend of corn in 2017 was affected by multiple factors, including the supply and demand relationship in the domestic corn market, policy adjustments, trade situation, and weather conditions. Overall, the price of corn showed a trend of volatile increase in 2017.

On one hand, the supply and demand relationship in the domestic corn market was the main factor affecting the price of corn. In 2017, the domestic corn production decreased while demand continued to grow, especially in the areas of pig breeding and deep processing, resulting in tight supply in the corn market and price increases.

On the other hand, policy adjustments also had a significant impact on corn prices. In 2017, the government continued to promote agricultural supply-side structural reform and implemented a series of policies, including destocking, adjusting structure, and filling短板, which also had a positive impact on corn prices.

In addition, the trade situation also had an impact on corn prices. Due to the high international corn price compared to the domestic price, the domestic corn import volume increased, which exerted certain pressure on the domestic corn market price. However, due to the tight supply of domestic corn, the impact of the trade situation was relatively limited.

Finally, weather conditions also had a certain impact on corn prices. In summer 2017, China was hit by floods and droughts in many areas, which affected the growth of corn and pushed market prices up at one point.

Overall, the trend of volatile increase in corn prices in 2017 was evident. For farmers, although affected by weather conditions and other factors, overall, the corn planting efficiency still increased. While for consumers, the increase of corn prices may have an impact on some agricultural product prices.