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Big
particle
Merit:
(1) The particle is relatively large in hardness, the dust seldom
arise, easy to load and unload;
(2)、The utilization ratio of nitrogen is high. To the rice crop,
in order to reach the same harvest yield, it can save 1/3 of quantity
to use the big particle urea. In the South, are verified , the nitrogen
usually absorbs efficiency to improve by 20% by the agricultural
experiment .
The
big particle urea is suitable for various kinds of soil and
various kinds of crops, include the nitrogen that the high
nitrogen raised one, But and topdresses and uses as the base
manure. Big particle urea ammoniation speed and moisture,
temperature, organic matter content of soil of course, , sour
alkali degree relevant, Too soil type, apply fertilizer degree
of depth influence of factor. Because big particle urea of
our company add and clear up pharmaceutical slowly, all ammoniation
time take than ordinary urea long, The fertilizer efficiency
is longer than the ordinary urea
too, so, should use in early 3-5 days more than the ordinary
urea
when peasant households use. At the time of making the big
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urea base manure to use, it is the nonirrigated farmland that is
used before ploughing turning over , Plough when looking through
burying into soil deeply urea, with fat the result of use is better
together peasant family have; It is paddy field that can loose to
construct and left urea peasant family have, then ploughed and turned
up the soil in front of cultivated land, Poured water 2-3 days later,
there is water such as the paddy field, after constructed the urea,
Can't turn on the water , prevent the fertilizer efficiency from
reducing. Topdress the big particle urea while using, had better
be constructed by row replacement or the cave , try not to spread
fertilizer over the fields. When unable row replacement or the cave
is constructed, the best before and after the light rain , spread
fertilizer over the fields when the soil is moist. Make quantity
should not too much when turning green fat, make and divide tiller
construct the foot when being fat ear of grain fat. There is sure
function of increasing production too while doing foliage top dressing.
Big particle urea should make leave apply fertilizer, its density
is generally 0.5-2%. |
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big particle urea can mixes and uses with peasant families,
such as big soya-bean cake, night soil, compost, barnyard
manure,etc. fatly , But because of the biological function
of the emblem, will accelerate the ammoniation of urea, so
mix while using, Must mix and use at the same time at the
same time , can't not need for a long time after mixing, so
as not to cause losses of fertilizer efficiency. Can be with
chlorine ization potassium, carbon nitrogen, passing weak
hygroscopicity chemical fertilizers, such as calcium phosphate,
calcium chloride,etc. to mixes and uses too, But will use
immediately after mixing, can't preserve for a long time .
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Also can mixes and uses
with sulphuric acid ammonium, sulphuric acid potassium, plant ash,
lime, ground phosphate rock fat, calcium magnesium phosphate,etc.,
Because above-mentioned assortment of chemical fertilizer have no
hygroscopicity basically, can mix at will . The big particle urea
can't mixes and uses with the chemicals fertilizer with strong hygroscopicity,
such as nitric acid ammonium, sodium nitrate, carbonic acid hydrogen
ammonium,etc. . |
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