耐盐、抗碱、耐涝的优良牧草作物—(禾参)子实验研究

AN EXPERIMENTAL STUDY ON ECHINOCHLOA FRUMENTACEA LINK—A BETTER GRASS. TOLERANT TO SALT, ALKALI, AND WET SOIL

穇子耐土壤全盐0.5％,耐土壤碱比度37％,在土壤PH8.3—9.5条件下也能生长。穇子幼苗在土壤最大持水量的100％时生长正常,抽穗灌浆结实阶段,土壤水分达到超饱和状态,不发生倒伏而能结实成熟。穇子在盐碱化、退化草原上,公顷产草5 000公斤左右,是原草原产量的7倍左右。穇子吸盐、碱能力高于谷子和糜子,其中吸Na的能力特別强,每100克干物质吸收的Na盐含量(以氧化物表示)是谷子的6.7倍,是糜子的3.1倍。对改良盐碱化草原,提高其生产力,具有较高功效。

Echinochloa frumentacea Link is a better annual grass. Tolerant to salt and alkali, waterlogging—resistance and with high economic effects. It can endure 0.5％ concn, of soil total salt, 37％ conch, of soil alkalinity,and can grown in the soil condition of pH 8.3-9.5. The seedlings grow normally in soil maximum moisture Gapacity of 100％,and didn't lodge, even can fruit, ripen, under the condition of soil moisture over saturated in the Periods of shooting, filling and fruiting. In the salinized, alkalized and relrogiessive grass land, yieds about 5000kg/ha, of the grass may be obtained that is about 7 times compared with the output of original grass in the grass land. The concentration of absorbing salt and alkali are higher than millet and broom corn millet, especially of absorbing Na, 100g dry matter of plant can absorb Na (expressed with sodium oxide)6.7 times as strong as millet and 3.1 time as broom corn millet. It's a higher efficient grass for improvement of salinized and alkalized grass land, and inoreasing productivity.