论文部分内容阅读
本文对籽粒苋(Amaranthus cruentus)生长发育与气温、光照、水、肥和土壤含盐量等因子的关系,进行了试验研究,为在生长季节较短的地区(当地无霜期只有100天左右)推广应用于生产提供理论依据和技术措施。R104是一种喜温植物,在日平均温度达到10℃左右,才能出苗,当日平均温上升到20—23℃时,生长最为迅速,当日平均温下降到5℃左右时,生长处于停滞状态,它也是一种喜光的C_4植物,在土壤水分不亏缺条件下,光照上升到14万Lx,亦不呈现萎蔫状态,在遮荫条件下,植株生长细弱矮小。适宜的土壤水分和肥力是发挥籽粒苋高产优势的重要条件,在气候温暖、阳光充足的生长季节,适时进行灌溉和施肥,能使它的产量成倍增加,每公顷青饲产量可达100t左右的高产。R104还具有较强的耐盐碱能力,在土壤pH值8.5,含盐量0.6%以下,仍能正常生长发育,土壤含盐量达到0.8%,生长发育受到影响,产量明显下降。
In this paper, the relationship between the growth and development of Amaranthus cruentus and the factors such as temperature, light, water, fertilizer and soil salinity was studied in this paper. In order to promote the growth of Amaranthus cruentus in the short growing season (the local frost-free period is only about 100 days) Applied to produce a theoretical basis and technical measures. R104 is a kind of thermophilic plant. When the average daily temperature reaches about 10 ℃, the seedling can emerge. When average daily temperature rises to 20-23 ℃, the growth is most rapid. When the average temperature drops to about 5 ℃, the growth is stagnant, It is also a kind of hi-light C_4 plant. Under the condition of soil moisture is not deficient, the illumination rises to 140,000 Lx and does not show the wilting state. Under shading conditions, the plants grow thin and short. Appropriate soil moisture and fertility are the important conditions for the high yield of grain amaranth. Irrigation and fertilization can be carried out in a warm and sunny season in a warm and sunny season, which can double the yield of green amaranth and reach 100t per hectare High yield. R104 also has strong ability of resistance to salt and alkali. Under the condition of soil pH 8.5 and salt content 0.6%, R104 can still grow and develop normally. The salt content of soil reaches 0.8%. The growth and development are affected, and the yield is obviously decreased.