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广东全省单产500斤以下的低产田多集中在丘陵区,丘陵区的低产田又以东江丘陵具有代表性。东江丘陵区包括六个县,有耕地四百余万亩,是全国若干大研究中心珠江三角洲商品粮基地样板的主要类型地区之一,是本省的历史低产区,年亩产稻谷500斤以下的低产田占60%以上。研究改变这个地区的低产面貌,对改变占全省耕地60%的广大丘陵区的低产面貌具有重要意义。因此,本院派出了一个由粮食、經济作物、土肥等专业研究人員組成的綜合工作組,到东江丘陵区深入調查研究低产原因和改变低产面貌的經驗和途径。
The low-yielding fields below 500 kg in Guangdong province are mostly concentrated in hilly areas, and the low-yielding fields in hilly areas are represented by Dongjiang hills. The Dongjiang hilly area consists of six counties with more than 4 million mu of arable land and is one of the major types of model bases for a number of large research centers in the Pearl River Delta. It is a historical low-yielding area in the province with an annual output of less than 500 kg of rice Low-yield fields account for more than 60%. Studying changes in the low-yielding landscape in this area is of great significance to the low-yielding outlook of the vast hilly areas, which account for 60% of the total arable land in the province. Therefore, we sent a comprehensive working group composed of specialized researchers such as grain, cash crops and soil fertilizers to conduct an in-depth investigation and study of the causes of low yield and the experience and ways of low-yielding appearance in the hilly Dongjiang District.