Knowledge Base
 

Identification Code

PP00139

Project title

Study of irrigation technique of secondary crops in rice crop rota-tion

Project location

The Republic of Kazakhstan, Shymkent oblast, Chordarya rayon, "50 years of October" state farm.

Rubric

70.21.31; 70.21.35

Rubric (SIC ICWC)

01.30.03

Project duration

1969-1973

Project manager

Zhdanov G.N., KazNIIGiM The Republic of Kazakhstan, 484022, Taraz, K.Koigeldy str., 12

Summary

Studies are dedicated to grounding of alfalfa irrigation effective methods in rice crop rotations and establishment of optimal irrigation technique elements providing opportunity of high alfalfa crop yields obtaining under maintaining and improving irrigated lands reclamation state. Climate is continental. Soils - meadow-gray desert, medium saline. Ground water table is 1.2-1.5 m (in vegetation period), 2.7-3.0 m (in autumn-winter period). EPP with area 35-40 ha are represented by rice irrigation system structure of maps of Krasnodar type. Alfalfa irrigation - ordinary checks' flooding, in checks over stripes, over furrows, by overflow irrigation with the help of -165. According to results of studies for application on Kzylkul rice irrigation system alfalfa furrow and overflow irrigation with the help of -165 was recommended. Recommended methods allow to reduce irrigation depth to 850-900 m3/ha that is 40-50% less than under ordinary checks' flooding and gives proper uniformity of soil wetting, reduces irrigation time significantly, creates favorable water-aerial conditions for alfalfa, high norm of profitability as well as the most efficiency of mentioned costs.

Key words

irrigation methods; water discharge, irrigation regime; irrigation technique, alfalfa

Bibliography

1. Authors - Zhdanov G.N., Goryunov N.S. Title - "Alfalfa irrigation in rice crop rotations and rice system structure" "Hydro-engineering and reclamation", 1972. Results of studies are given on grounding alfalfa irrigation methods in rice crop rotations. Their influence on aggregate and micro-aggregate soil composition, ground water table dynamics, crops' physiology was defined. Irrigation system parameters and possibility of different irrigation methods application were given. 2. Authors - Zhdanov G.N., Bykov V.G. Title - "Alfalfa in Shymkent oblast" "Forage", 1974. Different alfalfa irrigation methods in rice crop rotation were considered. Irrigation regime and soil productivity was given.