水稻生产是一座“露天工厂”。旱、涝、冷、暖,土壤肥瘠,地形地势和病虫杂草等,都直接影响水稻的生长与生产。随着科学技术的发展,我们已经能够多方面逐步认识自然、改造自然,从而在水稻生产中取得更大自由,更有把握地夺取水稻丰收。例如,大家熟悉的气象预报,就是预测“风云”,使我们能主动采取措施,趋利避害;又如水稻病虫害的预测预报,就是预测病虫发生发展规律,使我们能寻求有利时机,防害灭病。近几年发展起来的水 Rice production is an “open-air factory.” Drought, waterlogging, cold, warm, soil fertility, terrain and pests and weeds, etc., have a direct impact on rice growth and production. With the development of science and technology, we have been able to gradually understand nature in many aspects and transform nature so that we can gain greater freedom in rice production and seize the harvest of rice with greater certainty. For example, the well-known meteorological forecast means forecasting “situation” so that we can take the initiative to take measures to avoid disadvantages. Another example is the prediction of pests and diseases in rice, which is to predict the occurrence and development of pests and diseases so that we can seek favorable opportunities and prevent Harm the disease. Water developed in recent years