“万物生长靠太阳”。作物的产量形成主要是利用光能,通过光合器官进行光合作用,将所吸收的二氧化碳和水合成碳水化合物。最大限度地利用太阳辐射能,不断提高作物的光能利用率,是充分利用气候资源,提高农作物产量的一项重要任务。 我们在研究丰产麦田光条件的同时,1974—1975年对小麦各生育期的光合生产量作了初步测量,以探讨提高光能利用率的途径。 一、研究方法 作物光合效率的测定方法很多,本文采用取样称重法。即在小麦返青后的各发育期间,每10天取样 “Everything grows by the sun.” Crop yield formation is the use of light energy, photosynthesis through photosynthetic organs, the absorption of carbon dioxide and water into carbohydrates. To maximize the use of solar radiation, and continuously improve the utilization of light energy of crops, is an important task to make full use of climate resources and improve crop yields. While studying the light conditions of high-yielding wheat fields, we made preliminary measurements of the photosynthetic production of wheat in different growth stages from 1974 to 1975 to explore ways to improve the utilization of light energy. First, the research methods There are many ways to determine photosynthetic efficiency of crops, this paper uses sampling weighing method. That is, every 10 days during each development after the wheat is turned green