【摘要】 信阳地区位于河南省南部，土壤类型有黄棕壤、黄褐土、潮土、水稻土等。通过土壤普查，发现全区土壤表层速效锌含量普遍偏低，土壤缺锌已成为限制作物产量和品质的重要障碍因素。1994～1996年我们在对信阳土壤锌的现状进行分析的基础上，对杂交水稻施锌技术作了系统试验，结果表明，杂交水稻锌肥耖口基施30～45kg／hm2和蘸秧根3～9kg／hm2增产效果十分显著。更多还原

【Abstract】 XinYang Municipality lies to the south of HeNan Province. There are serval soil groups such as yellow brown earth, yellow cinnamon soil, rice paddy soil and so on.Through soil survey. We found that the soil surface layer of the all area contains rapidly available zinc much little. Soil impoverished zinc has become an important impediment factor to limit crop yield and quality. This paper analyses the present status of zinc of the soil and its application techniques for hybrid rice from 1994 to 1996 in Xinyang. The result shown that increasing output effect is very evident.更多还原