Abstract
Effect of the increasing dosages of mineral fertilizers on formation and modification of rice vegetation organs’ anatomic structure in the conditions of Kazakhstan Aral Sea area was studied. Anatomic and morphophysiological signs and properties of favorable effect of mineral fertilizers introduction in an optimally high dosage on high crop yield was determined, namely: the number of external small conducting bundles as well as internal large conducting bundles and their area increases; the number of conducting bundles increases in the leaf midrib as well as the total area of leaves and the number of photosynthetic mesophilic cells. This is conductive to increase in the cropping capacity and the rice grain quality. Negative effect of the high dosages of mineral fertilizers: small and large conducting bundles are located closer to the stalk periphery which results in extension (to a certain degree) of the stalk core space. This, in tern, leads to increase (to a certain extent) in the degree of the rice stalk lodging.
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