For the materials with potatoes(Variety,Zihuabai),uptake and distribution of B of potato and fertilization effects were studied through field experiments,which were conducted in the Tumochuan plain,Inner Mongolia.Four treatments included no fertilizer (CK),manure (M),nitrogen and phosphorus fertilizers (NP) and manure combined with N and P fertilizers (M+NP).Results showed that,the content of B in leaves increase dramatically and the content of B in stems and tubers slow decline.With the growth stages advance,the amount of B uptake in the whole plant and tubers changed as a "S" curve and the relationships were formulated by simple cubic equation and logarithmic equation.The average content of B in leaves,stems and tubers is 40.8,27.5and 12.9 mg/kg in the whole growth period.The maximum of B absorption rate and accumulation amount in plant occurred at 55 d(tuber bulking period) and 86 d(starch accumulation period) after emergence.Manure,nitrogen and phosphorus could promote the absorption of B significantly,and a positive interaction effect of organic manure combined with N and P fertilizers on absorption of B was observed.The distribution of B in leaves and stems slow decline and the distribution of B in tubers presented the tendency of rising with the shift of organic centre from stem to tuber.The distribution of B of Stems-leaves and tubers is respectively 60% and 40% in starch accumulation period,40% B of total in plant transferred to the tube at harvesting.Organic manure combined with N and P fertilizers which could improve running efficiency of B.The amount of B uptake was 5.5-6.1 g producing 1 000 kg tubes and the consumption coefficient and production efficiency was respectively 0.002 and 173.
ZHANG Sheng1
,
BAI Yan-shu1
,
CUI Yan2
,
YU Zhuo1
. Laws of Uptake and Distribution of Boron in Potato Plants and Effects of Fertilization on It[J]. Acta Agriculturae Boreali-Sinica, 2010
, 25(1)
: 194
-198
.
DOI: 10.7668/hbnxb.2010.01.039
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