Investigating and compariting the threshing wastes and losses in rice harvesting by some Chinese whole-crop combine harvesters

Karimpour Balajorshari, Morteza and Askari Asli-Ardeh, Ezzatollah (2015) Investigating and compariting the threshing wastes and losses in rice harvesting by some Chinese whole-crop combine harvesters. Masters thesis, university of Mohaghegh Ardabili.

Text (بررسی و مقایسه تلفات و ضایعات کوبش در برداشت با چند کمباین تمام محصول چینی) Morteza Karimpour Balajorshari.pdf Download (834kB)

Abstract

Qualitative losses and quantitative losses of three different harvesting methods with rice combine harvesters in three speeds travel (2.33, 3.26 ,4.52) km/h were assesed on factorial experiment with completly rondomized design and with three replications wich included two direct harvesting methods of (i) whole - crop rice combine and (ii) head - feed rice combine and one indirect harvesting method of (iii) rice reaper + threshing by whole crop combine harvester equipped with pick- up type header. results revealed that the maximum and minimum total harvesting losses were for head-feed combine (2.2%) and whole - crop rice combine in indirect harvesting (3.849%), respectively. Travel speed had significant effect on total losses so that with incrising the rate of travel speed, total losses were incrised.the maximum and minimum qualitative losses were (1.517% , 0.75%) for rice reaper + threshing by whole crop combine harvester equipped with pick- up in speed of 2.33 km/h and head - feed rice combine in speed of 4.52 km/h respectively . the maximum and minimum quantitative losses were (3.053% , 0.99%) for rice reaper + threshing by whole crop combine harvester equipped with pick- up in speed of 4.52 km/h and head - feed rice combine in speed of 2.33 km/h respectively

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