论文部分内容阅读
一、本区土壤肥力及肥料概况黄淮海平原是我国第一大平原,耕地约有2.4亿亩.我省黄淮海平原耕地为6349万亩,占全省耕地面积56.3%,为全国黄淮海平原的四分之一.境内光热水资源丰富,适宜多种农作物种植,是我省粮棉油盛产地,由于降水不匀,地表迳流不畅,土壤蒸发量大,长期受旱涝、风沙、盐碱与薄穷的威胁,农业生产低而不稳.据近1-2年来封丘、新郑、兰考、西华、淮阳、汝南等六个县的土壤普查和7104个土样的化验分析,耕作层土壤有机质含量1-1.5%的占不到1%,0.7-1%的占
First, the area of soil fertility and fertilizer profile Huang-Huai-Hai Plain is the largest plain in China, about 240 million acres of arable land in the province Huang-Huai-Hai Plain 63.49 million mu of arable land, accounting for 56.3% of the province’s arable land for the national Huang-Huai-Hai Plain Of the quarter.The territory of hot and light water is rich in resources, suitable for a variety of crop cultivation, is rich in cotton oil in our province, due to uneven precipitation, poor surface flow, soil evaporation, long-term drought and flood, sand , Saline-alkali and thin-poor threats and low and unstable agricultural production.According to the soil census and 7104 soil samples of Fengqiu, Xinzheng, Lankao, Xihua, Huaiyang and Runan counties in recent 1-2 years Laboratory analysis, tillage layer soil organic matter content of 1-1.5% accounted for less than 1%, 0.7-1% of the total