浙江杭嘉湖平原区农业地球化学区划的初步研究

根据杭嘉湖平原区区域农业环境地球化学调查资料及在此基础上开展的区域农业、专题农业地球化学研究结果，对本区进行了农业地球化学区划的初步研究。研究结果将本区分为泻湖湖沼粮油桑地球化学区、水网平原粮桑油地球化学区、滨海平原麻棉菜地球化学区和低山丘陵菜竹林地球化学区，提出了本区１０种营养元素施肥规划，阐述了每个地球化学区的作物布局、施肥方法，预测了据此结果可能给本区农业生产增加的经济效益。

PRELIMINARY STUDY ON AGRICULTURAL GEOCHEMICAL REGIONALIZATION OF THE HANGZHOU-JIAXING-HUZHOU PLAIN,ZHEJANG PROVINCE

Based on regional geochemical investigation and the results of agricultural studies performed in the HangzhouJiaxing-Huzhou plain, a preliminary study of the agricultural geochemical regionalization for crops plantation and fertilization was carried out. The result shows that the area can be divided into four agricultural geoehemical regions as follows: (1 ) the geochemical region of provisions and oil crops and white mulberry of lagoon-lake-swamp, (2 ) the geochemical region of provisions crops,white mulberry and oil crops of the network plain of rivers, (3 ) the geochemical region of fiber crops, cotton and vegetables of the littoral plain and (4) the geochemical region of teas,bamboos and woods of the low mountain sand hills. The fertilization plan of ten nutritive elements in this area was suggested and crops plantation and fertilization in each agricultural geochemical region was discussed. It is predicted that ecnomic benefits can be increased in agricultural production in this area by rational crops plantation and scientific application of fertilizer.