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河南省从1957年引人田菁进行观察比较,至1963年种植到600亩,由于经济价值高,改土培肥效果显著,1964年迅速扩大至20,000亩以上,被列为重点推广品种,预计三、五年内,将在盐碱洼地普遍推广.一、田菁的耐盐耐涝能力1.田菁的耐盐极限:经我省各地试验,初步认为田菁的耐盐极限与盐碱类型有关.据省农科院土肥所、商丘专区农科所、中牟专区农科所试验,在以氯化物为主的盐土上,全盐低于0.5%,Cl~-低于0.18%,才能立苗.当全盐量为0.624%、Cl~-为0.211时,种
Henan Province introduced Tianjing from 1957 for observation and comparison. By 1963, it was planted to 600 mu. Due to its high economic value, the effect of soil improvement and fertilization was remarkable. It was rapidly expanded to more than 20,000 mu in 1964 and was listed as a key species for promotion. Third, within five years, will be widely promoted in saline-alkali depression .Tianjing salt and waterlogging tolerance 1. Sesbania salt tolerance: the test across the province, initially that the salt tolerance of salt and the type of salt According to the Provincial Academy of Agricultural Sciences, Soil and Fertilizer Institute, Shangqiu Prefecture Agricultural Institute, Zhongmou Prefecture Agricultural Experiment, in salt-based saline soil, salt less than 0.5%, Cl ~ - less than 0.18%, to stand When the total salt content is 0.624%, Cl ~ - is 0.211, the species