Be applicable to the organic calcium fertilizer of acidified soil
Technical field
The present invention relates to fertilizer and manufacture field, be specifically related to a kind of organic calcium fertilizer being applicable to acidified soil.
Background technology
In recent decades, soil acidification has become a serious global ecological environment problem.In China, research finds the acidification phenomenon all occurring in various degree up to the agricultural land soil of 90%, soil pH value on average declines about 0.5 unit, be equivalent to soil acid amount and add 2.2 times on the original basis, become one of main Environmental Problems of the intensive agrosystem of China, recent statistical figure show that the soil acidification problem that the excessive use of a large amount of nitrogenous fertilizer causes is more serious, the amount of the unit surface acidic substance that Term Fertilization produces is much larger than the Utilization ability of farm crop etc., cause a large amount of fertilizer residue in soil, form the acidifying of soil, and cause wheat, corn, the underproduction such as peanut, disease and pest increases the weight of.Another obvious feature of the soil of acidifying is that the wherein cationic loss of trophicity is serious, and wherein especially serious with the loss of calcium ion, and multinomial research shows under acidification, and in soil, the number of dropouts of calcium ion is generally greater than 50%, causes soil calcium deficiency.
Calcium, as the necessary nutritive element of growth and development of plants, plays extremely important effect in plant materials.It is the necessary element that cell walls glue-line is formed, play an important role in the integrity maintaining cytolemma, calcium ion can also reduce respiration, prevents cell aging, promotes photosynthate translocation, prevents the murder by poisoning of metal ion and eliminate oxalic acid to the murder by poisoning of plant materials simultaneously.On a cellular level, calcium ion, as the second messenger of cell, is the key signal molecule in vegetable cell S-R signal transduction mechanism, participates in reconciling reproductive growth and various coercive defensive ractions etc.In addition, the vital role of calcium in programmed cell death has been familiar with and has been come into one's own.Obviously, in acidified soil, the shortage of calcium must cause a series of harm reaction of crop.
In current agriculture production, the general lime material that uses improves acidified soil, but long-term application lime not only causes, and soil permeability is deteriorated, soil compaction is serious, also affects the absorption of plant phosphorus.Acidified soil is used these fertilizer, is unfavorable for the improvement of acidified soil, therefore, it is very necessary for inventing calcareous fertilisers special on acidified soil.
Summary of the invention
The object of the invention is to: propose a kind of organic calcium fertilizer being applicable to acidified soil, be manured into soil middle slow releasing, while improvement soil function, can also improve air permeability and the surge capability of soil, avoids the further acidifying harm of soil.
Technical solution of the present invention is: this organic calcium fertilizer is made up of the raw material of following weight percent: attapulgite breeze 25%, oyster shell whiting 60%, trace element 15%.
Wherein, described trace element is made up of the raw material of following weight percent: borax 35%, manganous sulfate 10%, silica 1 5%, zinc ammonium phosphate 15%, ferrous sulfate 15%, copper sulfate 5%, molybdenum 2.5%, selenium 2.5%.
Wherein, the preparation method of described organic calcium fertilizer is: attapulgite and grinding shells are crossed 50 mesh sieves and obtain powder particle, attapulgite breeze, oyster shell whiting, trace element are mixed according to the above ratio, stir, obtain organic calcium fertilizer.
Wherein, the using method of described organic calcium fertilizer is: apply by the rate of fertilizer application of every square metre of farmland area 200g fertilizer.
Beneficial effect of the present invention is: the adsorption function 1, utilizing attapulgite, is released slowly in soil, is conducive to effective release of fertilizer efficiency and the abundant absorption of crop by organic calcareous in fertilizer, long-term shortage of supplementing calcium in acidified soil; 2, attapulgite can also pass through its good granulation performance, reduces the antagonism between soil intermediate ion, improves the crumb structure of soil, chessom, improves the ventilation property of soil, reduces and eliminates soil compaction and viral disorder; 3, increase adsorption by soil structure, improve the fertilizer conservation function of soil further, reach improvement recovery soil object, thus improve the function of crop yield and quality; 4, improve buffering power of soil, increase its dispersiveness, keep soil from packing together.
Accompanying drawing explanation
fig. 1for applying the regulating and controlling effect of fertilizer to acidified soil pH value in application examples 2, HZGJ: Xun He village, Gao Jian town, Hongze County, XYGT: Heshan village, county magistrate beach town, Xuyi.
fig. 2for applying the change of fertilizer to the commutative calcium contents of soil in application examples 2, HZGJ: Xun He village, Gao Jian town, Hongze County, XYGT: Heshan village, county magistrate beach town, Xuyi.
fig. 3 isthe impact of fertilizer on wheat yield is applied, HZGJ: Xun He village, Gao Jian town, Hongze County, XYGT: Heshan village, county magistrate beach town, Xuyi in application examples 2.
Embodiment
According to following embodiment, the technical solution that the present invention may be better understood.But those skilled in the art will readily understand, concrete material proportion, processing condition and result thereof described by embodiment only for illustration of the present invention, and should can not limit the present invention described in detail in claims yet.
Embodiment 1: prepare organic calcium fertilizer according to following steps
(1) by attapulgite and shell ground 50 mesh sieves respectively, attapulgite breeze and oyster shell whiting is obtained;
(2) get borax 3.5 kg, manganous sulfate 1.0kg, silica 1 .5kg, zinc ammonium phosphate 1.5 kg, ferrous sulfate 1.5 kg, copper sulfate 0.5kg, molybdenum 0.25 kg, selenium 0.25 kg, stir, obtain micro-;
(3) get attapulgite breeze 12.5 kg, oyster shell whiting 30.0 kg, micro-7.5 kg, stir, pack on request, obtain finished product organic calcium fertilizer.
Analyzing and testing is carried out to the organic calcium fertilizer of the present embodiment: calcium oxide content is 42.2%, magnesium oxide 7.3%, boron 25.4%, silicon oxide 22.3%, other iron, aluminium, zinc, molybdenum 2.8%.
application examples 2:in order to verify practical function of the present invention further, we have selected Xun He village, Gao Jian town, Hongze County (HZGJ), acidifying in recent years obvious winter wheat field soil in two pieces, Heshan village, county magistrate beach town, Xuyi (XYGT) compares test.The area of each community is 100m
2.Before winter wheat sowing, use organic calcium fertilizer, rate of fertilizer is: 200g/m
2, check plot does not apply.Before winter wheat harvesting time, soil sampling measured the pH value of the soil (soil depth 0-10cm) of each community and commutative calcium contents and investigated the output of winter wheat every month.Acquired results as Figure 1-3.Use fertilizer provided by the invention after 6 months, soil (soil depth 0-10cm) pH value average specific foundation soil pH value improves 0.6 unit, with between SAS statistical software analyzing and processing in significant difference (
p< 0.05), in soil interchangeability calcium contents than plantation before improve nearly 1 times, winter wheat yields is 485kg/ mu, comparatively contrast output increased 12%, with between SAS statistical software analyzing and processing in significant difference (
p< 0.05).