Summary: Research workers on the Chair of Climatology of the József Attila University at Szeged undertook in July and August 1971, under Prof. R. Wagner, microclimatological investigations in a rice crop on the site of the Research Institute for Irrigation at Szarvas.

Measurements were carried out on four rice crops subjected to various treatments, on a free water surface and on a dry area.

From these measurements it is found that, during the earlier phases of development of the rice plant, the rice crop is not yet influencing the temperature conditions of the microclimatic space. During the later phenological phases, the vegetative organs are enriched and the effective surface is transferred to a higher level. In a depth of 10 cm in the flooding water and in the soil below it, temperature variation is modified, the amplitudes are decreased and significant deviations are experienced as compared to data from the free water surface and from the free dry surface.

In processing the data, we used the method of approximation by trigonometrical polynomials. In addition of the investigation of various crops, trigonometrical polynomials of temperature are well exhibiting the modifications in temperature which are typical for a rice crop in three phenophases.

Repository

Download PDF