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823 4 |
Ultima descărcare din IBN: 2023-07-04 10:54 |
Căutarea după subiecte similare conform CZU |
633.3:631.675.6 (1) |
Plante de nutreț cu excepţia ierburilor (121) |
Ameliorații. Îmbunătățiri funciare și agricole (131) |
SM ISO690:2012 КУЗНЕЦОВА, Инга. Потребность во влаге растений стевии Stevia rebaudiana bertoni во время вегетативного развития. In: Ştiinţa Agricolă, 2017, nr. 1, pp. 60-65. ISSN 1857-0003. |
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Ştiinţa Agricolă | |||||||
Numărul 1 / 2017 / ISSN 1857-0003 /ISSNe 2587-3202 | |||||||
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CZU: 633.3:631.675.6 | |||||||
Pag. 60-65 | |||||||
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The paper presents research results on the water absorption capacity of stevia plants. It was established that, before the first flowering phase, the plants absorb about 2790-2850 ml of moisture. The half of moisture is absorbed by the plants in the first 14 days after seedling planting on ground. At this stage, the thickness of the leaf apparatus increases by 50% of the total thickness. The influence of planting density (45x18 cm; 45x16 cm; 45x12 cm) on biometric indices and water absorption capacity of plants was studied. Closer spacing (45x12 cm) causes the reduction of plant height to 42 cm and leaf surface area to 4,5 cm3. In addition, the concentrated spacing also causes the increase of the transpiration rates and transpiration coefficient. Therewith, the intensity of moisture evaporation from the surface of leaf apparatus remains unchanged at different planting densities. Increasing planting density from 45x18 cm to 45x12 cm reduces water absorption capacity of plants by 37-40%. |
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Cuvinte-cheie Стевия, Полив, водопоглощение, Густота посадки |
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