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对最新引人我国的盐草属(Distichlis spicata)植物NyPa草的部分生物学性状和盐碱条件下的生产特性进行了研究。结果表明:NyPa宽叶品种在试验地条件下,2月中旬与冬小麦同时返青生长,12月中旬停止生长,进入休眠,生长期长达10个月,休眠期植株保持绿色。NyPa窄叶品种3月上旬开始返青,11月下旬停止生长,生长期达8个半月,叶片细长、鲜绿、柔软。NyPa草不能进行种子繁殖,可防止成为有害杂草无限扩散。示范田大面积种植2年后使土壤含盐量从4‰~5‰降低为1‰。在含盐量4‰~6‰的土壤上,最大鲜草产量达70435.2kg/hm2,最大干草产量18964.05kg/hm2。在高盐碱地(含盐量5‰~6‰)的鲜草产量分别为高羊茅和獐茅的190.97%和154.04%,干草产量分别为455.06%和427.21%。
The recent biological characteristics of NyPa grass, a plant of Distichlis spicata introduced into our country, and the production characteristics under salt and alkali conditions were studied. The results showed that under the condition of experimental sites, NyPa broad-leaved varieties returned to green at the same time with winter wheat in mid-February, stopped growing in mid-December and entered dormancy with a growth period of 10 months and green plants during dormancy. The NyPa narrow-leaf varieties began to rejuvenate in early March and stopped growing in late November. The growth period reached 8 and a half months. The leaves were slender, bright green and soft. NyPa grass can not be seed multiply, to prevent the proliferation of harmful weeds unlimited. Demonstration field after planting a large area 2 years after the soil salinity reduced from 4 ‰ ~ 5 ‰ reduced to 1 ‰. The maximum fresh grass yield was 70435.2kg / hm2 and the maximum hay yield was 18964.05kg / hm2 in the soil with salinity 4 ‰ ~ 6 ‰. The yield of fresh grass in high saline soil (salinity 5 ‰ ~ 6 ‰) were 190.97% and 154.04% of tall fescue and pilchard, respectively. The yield of hay was 455.06% and 427.21% respectively.