Srisa-Ard K
Department of Agricultural Technology, Faculty of Technology, Mahasarakham University, Mahasarakham 44000, Thailand.
Pak J Biol Sci. 2007 Apr 15;10(8):1282-7. doi: 10.3923/pjbs.2007.1282.1287.
This pot experiment was carried out at Suranaree Technology University Experimental Farm, Northeast Thailand to investigate effects of crop residues of sunflower, maize and soybean on total dry weight, top dry weight, plant height, root dry weight and seed yield of sunflower plants with the use of Korat soil series (Oxic Paleustults) during the rainy season (July-October) of the 2001. The experiment was laid in a split plot arranged in a Completely Randomized Design (CRD) with four replications where the crop residues of maize, sunflower and soybean were used as main plots. Whilst crop residues of roots, top growth and roots+top growth were used as subplots. The results showed that crop residues derived from roots of both sunflower and soybean plants had their significant inhibition effects of allelopathic substances on plant height, root dry weight, top growth dry weight and total dry weight plant(-1) of the sunflower plants than those derived from top growth of both crops alone (sunflower and soybean). Maize plant residues had no significant inhibition effect on growth of subsequent crop of sunflower.
本盆栽试验于泰国东北部的素攀武里皇家技术大学实验农场进行，旨在研究2001年雨季（7月至10月）期间，使用呵叻土系（氧化强发育湿润老成土）时，向日葵、玉米和大豆的作物残茬对向日葵植株总干重、地上部干重、株高、根干重和种子产量的影响。试验采用完全随机区组设计的裂区试验，共4次重复，其中以玉米、向日葵和大豆的作物残茬作为主区，而以根茬、地上部残茬以及根茬 + 地上部残茬作为副区。结果表明，与仅来自两种作物地上部（向日葵和大豆）的残茬相比，来自向日葵和大豆植株根部的作物残茬所含化感物质对向日葵植株的株高、根干重、地上部生长干重和总干重具有显著的抑制作用。玉米植株残茬对后续向日葵作物的生长没有显著抑制作用。
