五种粮草兼用型作物耐盐性的研究

STUDY ON SALT TOLERANCE OF FIVE DUAL—PURPOSE CROPS FOR BOTH GRAIN AND FORANG

通过各项试验测定了稗谷、湖南稷子、饲料稗、(禾参)子和碱谷五种粮草兼用型作物的耐盐性。结果表明,五种作物种子正常萌发的盐溶液浓度分别在3.7～12.5个大气压以下;在滨海盐化潮土上五种作物正常出苗的土壤盐溃度为0.30％左右;苗期以后耐盐能力相对提高到0.40％左右,其中碱谷可达到0.60％。几年来五种作物在滨海盐化潮土上试验、示范万亩以上,经济效益、生态效益明显,可作为该地区农区种草的主要品种推广。

The salt tolerance of five dual—purpose crops have been tested through various experiments. The result shows that: (1) the concentration of salt solution in soil for the germination of the five crops tested were normally below 3.7～12.5atm; (2) the salinities for the normal emergence of seedlings of the tested corps, in the coastal salinized soil recorded about 0.3％ and; (3) the salt tolerance rate of the tested crops increased to 0.40％ relatively after the seedling stage. Among the five crops tested, Eleusine coracana even reached 0.6％. In recent years, the five testing crops have been tested and demonstrated in more than 700 ha. in the coastal salinized soils. Both of the economic and ecological benefits are distinct. So, they can be extended as main forage crops in this district.