Влияние густоты стояния и схем посева и на рост, развитие и урожайность различных сортов топинамбура в условиях Зарафшанской долины

Аннотация

Subjects of the inquiry: Samples of 6 sorts of topinambur, 4 schemes of planting (90x25, 90x30, 90x35, 90x40), 3 ways of preparation seed tubers for planting (mass 15 - 20g, single - sprouted, cuttcd, mass 35 - 40 g, double -sprouted, solid). Aim of the inquiry: The selection of sort samples of topinambur under the conditions of irrigated grey - soils of Zarafshan valley and, on this base, revealing the optimal schemes of planting, the density of plants and also mass of seed tubers, ensuring getting the highest and high - quality yield and recommendations on their production. Method of inquiry: The ressarches were held on the fase of mcthodics of the Ministry of Irrigation and Agriculture of the Republic of Uzbekistan (1984, 1986) Moscow Agricultural Scientific Research Institute (1962, 1989) the Uzbek Scientific Rcseach Institute of plant - growing, by Dospckhov (1985). The results achieved and their novelty: For the first time under the conditions of irrigated grey - soils of Zarafshon valley of Uzbekistan there were elaborated elements of the technology of cultivation sort samples of topionambur-thcre were studied the influence of schemes of planting, density of plants, mass of seed tubers on the growth, development and yield - capacity of topinambur and determined the optimal schemes of planting, the density of plants and mass of seed tubers, scientifically substantiated the production of high, qualitative and cheap yield at high economical effectiveness. Practical value: Under the conditions of irrigated meadow - grey soils there were elaborated and studied the technologies of cultivation topionambur, the influence of optimal schemes of planting, density of plants and mass of seed tubers on the growth, development and yield - capacity of plants and, on their base were elaborated recommendations (2002) and inculcated into produchion. Degree of embed and economic effectivity: The results of researches, optimal mass of seed tubers, the guantity of sprouts, schemes of planting and density of plants arc inculcated on the area of 24 ha under the conditions of farms of Taylak and Akdarya districts of Samarkand region, thus there was obtained up to 382 centners of tubers, 1083 cent of yield of green mass, 1 mln 381,4 thousand sums of pure income. Sphere of usage: Stock - breeding specialized farms, farms and dchkan farms, pharmaceutical industry.