EFFECTS OF DIFFERENT SEEDLING SUBSTRATES ON SEEDLING QUALITY AND YIELD OF MACHINETRANSPLANTED RICE

IF 0.6 4区环境科学与生态学 Q4 ECOLOGY

Applied Ecology and Environmental Research Pub Date : 2023-01-01 DOI:10.15666/aeer/2105_44074423

M. JIANG, Z. CHEN, Y. LI, J.Q. WANG, X.P. SHEN

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引用次数: 0

Abstract

. To study the influences of the physical and chemical properties of different seedling cultivation substrates on the quality and yield of machine-transplanted seedlings in China, seeds of the rice (Oryza sativa L.) variety Yangjing 805 were sown in topsoil (TS), commercial seedling substrate (CS), straw (ST), rice husk (RH) and mushroom residue (MR). Changes in the seedling quality, nutrient content, and grain yield were analyzed. The results showed that the morphological indices and nitrogen metabolism-related enzymatic activities of seedlings treated with TS, CS, and MR were significantly higher than of those treated with ST and RH. The reduction in total N, alkali-hydrolyzed N, and available P was lower under TS and MR than under any other treatment. The highest rice yield was recorded for the MR treatment, with a 28.93% higher yield compared with the ST treatment. Among the seedling morphological indices, stem thickness (R 2 = 0.9604) and shoot dry weight (R 2 = 0.8835) showed the highest correlations with yield, while root length (R 2 = 0.8919) and root surface area (R 2 = 0.9125) were the root indices with maximum values. The variables that showed the closest relationship with seedling quality were bulk density, conductivity, and pH of the growing medium.

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不同育苗基质对机插水稻育苗品质及产量的影响

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来源期刊

Applied Ecology and Environmental Research ECOLOGY-ENVIRONMENTAL SCIENCES

CiteScore

1.40

自引率

14.30%

发文量

104

审稿时长

14 months

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