Page 5 - 07利用畜牧沼液配製高品質有機液肥及作物之肥培應用

LL, LF, LFE) and waxapple (CF, LF) experiments were started from young fruit

stage of the two kind of crops. The irrigative frequency was 7 days and the 1,500 L

every time, hence, the total liquid fertilizer amount was 7,500 L totally. The soil and

leaves were sampled and analyzed before and after experiments. And the quality of

fruits were estimated in the harvested stage.

Pretreatment and analysis of soils and plants

1.Pretreatment and analysis of soil

After taking back soil samples, get them air dried and grinded. Shake them
through a 2mm sieve. Here is how the soil will be analyzed. (1)pH: water : soil = 1:1,

measured by a pH meter (McLean, 1982). (2)Organic matter: measured by wet
oxidation method described by Nelson and Sommer (1982). (3)Ca, Mg, K: Extract the

K, Ca, Mg from the soil by 0.1N HCl. The content of K, Ca and Mg is measured by

inductively coupled plasma spectrometer (Jobin Yvon-2000) (Baker and Suhr, 1982).
(4)P: it will be measured by molybdenum blue method (Bray No.1) (Murphy and

Riley, 1962). (5)Fe, Mn: Microelements of Fe and Mn can be extracted from the soil
by 0.1N HCl. Its content can be measured by an AA spectrometer (Cope and Evans,

1985).

2.Pretreatment and analysis of leaves (Chang, 1981)

Clean the dusts and chemical residuals on the leaves by tap water. Put the leaves

o
into an oven (70-75 C). Grind them after 2 to 3 days and put them into a bottle. The
leaves will be resolved by concentrated sulphuric acid and analyzed by the following
methods. (1)N: it will be measured by Kjeldahl method. (2)P: it will be measured by

molybdenum yellow method (Bray No.1). (3)K, Ca, Mg are measured by inductively
coupled plasma spectrometer (Jobin Yvon-2000). (4)Fe, Mn: The concentrations of Fe

and Mn are measured by inductively coupled plasma spectrometer (Jobin Yvon-2000).

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