新西兰3月食品价格指数月率 0.5%，前值-0.50%。

Group 1 - The core point of the article is that New Zealand's food price index increased by 0.5% in March, contrasting with a previous decline of 0.50% [1] Group 2 - The increase in the food price index indicates a potential shift in consumer pricing trends within the New Zealand market [1] - The previous month's decline may suggest volatility in food prices, which could impact inflation rates and consumer spending [1] - Monitoring these changes is crucial for understanding broader economic conditions and potential investment opportunities in the food sector [1]