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英国牛津谷物栽培区正在扩大油菜的种植面积。为了了解淹水对油菜生长和产量的影响,以改进田间排水系统的设计,农业研究院 R.Q.Cannell 和 R.K.Belford 进行了淹水试验。试验地为砂壤土,上年种冬小麦(前作),设有32个渗水计,以监控水量。试验时在每个渗水计周围的五个同心圆位置上,用手工直播种子,深度为10厘米,作物出土后进行间苗,每个渗水计留50株,每平方米100株。试验分别于12月3日(叶期)、1月27日(叶期)和5月1日(主茎开第一批花)开始,使土壤表面连续淹水10天或42天,视其对油菜生长和产量的影响。并测定了土壤氧浓度、叶面积、株高、秸秆成分、子实产量和含油量等。结果表明,淹水期间土壤中氧浓度降低
Oxford, England corn cultivation area is expanding the area planted rapeseed. In order to understand the effects of flooding on rape growth and yield, and to improve the design of the field drainage system, R.Q. Cannell and R.K. Belford of the Agricultural Research Institute conducted flooding tests. The test site was sandy loam, the last year’s winter wheat (formerly), with 32 seepage meters to monitor the amount of water. Seeds were seeded directly by hand at five concentric circles around each seeder during the test. The depth was 10 cm. After the crop was unearthed, the seedlings were planted, leaving 50 per seeper and 100 per square meter. The experiment started on December 3 (leaf stage), January 27 (leaf stage), and May 1 (the first batch of main stem open flowers), so that the surface of the soil was continuously flooded for 10 days or 42 days depending on Effect on rape growth and yield. Soil oxygen concentration, leaf area, plant height, stalk composition, fruit yield and oil content were measured. The results showed that the oxygen concentration in the soil during flooding decreased