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广汉县通过土壤普查,找到了影响作物产量的障碍因子。他们应用土壤普查成果,开展科学试验,合理施用肥料,进一步促进了农业生产发展。广汉县主产粮油,90％的耕地为水稻土,其中冲积母质发育成的潮土占71％,再积母质发育成的黄泥占23％,土壤肥沃。但近年来,由于偏施氮素化肥,有机肥和磷、钾肥跟不上,硼、锌等微量元素不足,作物生长不正常:油菜瘪荚,水稻坐蔸,玉米叶缘发红,过早倒伏,病虫害比较严重,影响了产量。在土壤普查中,坚持专业普查与农情访问相结合;查土壤障碍因子和试验、示范、推广应用成果相结合;促进近期生产同发展土壤科学相结合,开展了以下科学施肥试验和用肥活动。
Guanghan through the soil census found the obstacles affecting crop yield. They applied the results of soil census, carried out scientific experiments, and used fertilizer rationally to further promote the development of agricultural production. Guanghan main grain and oil, 90% of the arable land for paddy soil, of which alluvial mother developed into account for 71% of the influx of soil, then the accumulation of parent material developed into Wong Nai accounted for 23% of the soil is fertile. However, in recent years, due to the partial application of nitrogen fertilizers, organic fertilizers and phosphorus, potassium can not keep up, boron, zinc and other trace elements lack of crop growth is not normal: rape shriveled pod, rice satay, corn leaf margin redness, premature Lodging, pests and diseases more serious, affecting the yield. In the soil census, adhere to the professional census and rural access to the combination; check the soil barrier factor and test, demonstration, promote the use of the results combine to promote the recent production and development of soil science, launched the following scientific fertilization test and fertilizer activities .