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一、目的意义我省大约有四分之一的耕地面积和农业人口分布在中部干旱、半干旱地区。这一地区由于降雨量小,且分布很不均匀,气候干燥,缺少灌溉,70%以上的耕地属山旱地,对农业生产带来一定的威胁。为使这一地区从自然资源的有利方面,即光、热等条件方面得以合理开发利用,本试验自1983年以来从我国北方省区引进抗寒耐旱的山楂品种进行试验研究,致力于我省中部和其他地区发展山楂生产。
First, the sense of purpose About one quarter of the province’s arable land and agricultural population are located in the arid and semi-arid areas of central China. Due to the small rainfall, uneven distribution, dry climate and lack of irrigation in this area, more than 70% of the cultivated land belongs to the mountainous dry land, which poses a certain threat to agricultural production. In order to reasonably develop and utilize this area from the favorable aspects of natural resources, ie, light and heat conditions, the experiment has been conducted to introduce hawthorn varieties with cold and drought tolerance from northern China’s provinces and autonomous regions since 1983, Central Hawthorn Province and other areas to develop production.