Education of the republic of uzbekistan tashkent state technical university named after islam karimov

Mechanical Engineering
241 
Soil type, relief and microrelief, soil moisture and hardness are determined in accordance with 
GOST 20915. 
According to the agro-technical data of the farm, the size of the plant, the number of yield 
elements and the number of yielding branches per plant were determined. The development 
phase was determined (visually) by reviewing the leaf surface description (by density). 
During the defoliation of cotton, the length was determined in the calculated area of 10 m, the 
width of which was equal to the width of the machine cover. In the calculation, not less than 10 
areas are selected, taken on two diagonals of the calculation areas. 
The number of plants in all areas was calculated and the plant density up to the full 
number value was calculated according to the following formula [11]: 
,
10
=
'
'
2
S
n
N

(1) 
where 
n

- is the number of plants, pieces; 
S

- calculated surface area, m. 
The height of the cotton was measured in the straightened position, and the width was 
measured from the most protruding part of the side branches facing the row spacing. The error 
should not exceed ±1 cm. The error was determined to be no more than 10% by measuring the 
height of the opening at the bottom and the distance from the opening to the opening at the 
bottom of the row. The number of open and half-opened cages, including cages, was calculated 
separately for each nest. The open cocoons are full of bowls and the raw cotton can be easily 
removed from them. The open bowls of raw cotton in cotton were taken into account separately, 
while the total number of open bowls in the calculation platforms was taken into account 
separately. The obtained sum was divided by the number of open bowls belonging to this cotton 
navigator, and the number of separate open bowls per plant was determined. The proportion of 
open and semi-opened coffins was calculated. 
Cotton sizes (height, bush diameter) were determined. The diameter of the tuber was 
determined from the largest thickening of the tufts in the natural state. Technical efficiency was 
determined by the number of cotton swabs taken into account in determining the quality of work. 
The number of stalks dropped from the cotton stalks was determined when the spraying 
unit passed at the optimum speed with the working devices from the calculated area of three 
repetitions of length 10 m. Each counting cut was separated by pegs, which were kept in the field 
until the end of the experiment. 
Determination of meteorological conditions was carried out during the assessment of the 
performance of the experimental spraying unit. 
According to meteorological requirements, air temperature and humidity at 0.5 m and 2.0 
m altitudes, 0,1-0,2
0
С thermometer, aspiration psychrometer, universal Testo-400 measuring 
system or -50
0
C ~+70
0
C (measurement accuracy 

1
0
C) and a humidity of 10% ~ 99%, 
(measurement accuracy 

5 %) measured with a modern HTC-2 brand thermometer (Figure 2). 

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