主要多年生栽培草种在江苏区域试验结果分析

REPORT ON REGIONAD TRIAL OF MAJOR CULTIVATED SPECIES OF PERENNIAL FORAGE PLANTS IN JIANGSU PROVINCE

苜蓿、苇状羊茅等九种多年生栽培草种,在江苏沿海、丘陵山地和水网平原等不同类型地区,进行二年的区域试验结果表明:全部试验牧草生长发育良好,能完成整个生育周期。淮阴苜蓿和苇状羊茅抗逆性强,较耐盐碱、耐旱、耐热、越夏率在90％以上,产草量高,可作为全省主要当家草种,白三叶、黑麦草产量高,品质好,喜溫暖气候,较耐盐碱,其中白三叶越夏能力强,两者可为沿海和水网平原地区当家草种。紅三叶、鸡脚草较耐干旱和温热,越夏良好,产量和品质均尚好,适宜丘陵山区和平原区种植。小冠花耐干旱、耐瘠薄,生活力强,在贫瘠丘陵岗地和黄河故道荒地,极有希望推广种植。

The regional tests were conducted with nine perennial grass or legume species including alfalfa, tall fescue etc。 in the differant regions of Jiangsu Province such as the coast, hill land and water—net plain。 It was showed that all grass could grow well and complete growth and development stages。 Because Huanyin alfalfa and tall fescue were highly resistant to soil drought, high temperature and also tolerant to saline-alkali soil, they should be used for the dominant forage cultivars in Jiangsu Province。 However, there were high yield and good quality for white clover and ryegrass relatively tolerant to saline-alkali soil. Therefore, both of white clover and ryegrass were main cultivars at the coast and plain areas。 Red clover and orchardgrass which were relatively resistant to soil drought and slight high temperature had better over—summering, relatively high yield and good forage quality could be adapted for the cultivation at the hill land and plain. Crown vetch grew vigorously and tolerated soil drought or lack of fertilizers。 It was promising to extend the cultivation of the crown vetch at poor fertile hilly regions and waste land of the Yellow River ancient ways.