Vegetable crop is fond of calcium mostly, some closer the friend also had a lot of year of farmer such understanding, also can notice when cultivate compensatory calcium is fat. But the character as a result of earthy circumstance, calcic element, what still have employ kind is unscientific, so that the effect is not quite ideal.
Filling calcium, absorbing is crucial!Common saying says well, this filling calcium, still absorb so that look! Absorb bad, just be the crux of the problem with filling difficult calcium.
Soil texture
Speak of from fountainhead first, floral calcic source comes from more at soil, and the following and earthy circumstance often affects the crop absorption to calcic element!
The quality of a material of ● soil is light, organic qualitative indigent, drench lose serious soil, effective calcic in short supply;
The leaching action of ● acidity soil is strong, calcic light prediction of a person's luck in a given year, cause shortage:
When the nutrient content such as nitrogen of condition of the ammonium in ● soil, Potassium, magnesian, aluminium is exorbitant, with calcium happening Jie fights action, restrain the root system absorption to calcium.
Excessive of element of ● soil nitrogen, easy bring about crop flourishing to grow, root cap comparing drops, influence root system absorbs calcic ability.
The phosphorous content in ● soil is exorbitant, easy form difficult dissolve compound with calcium, affect calcic effectiveness.
Calcic carriage
The calcic Sunday run inside frond is carried basically happen in xylem, its carry power is rising action, namely calcium moves through rising current. So, metropolis influence absorbs the factor that always affects crop rising calcicly and have a change of luck.
● high temperature causes root system to dehydrate, plant decline Yan, increased the root system absorption to calcium difficulty.
● rainy rainfall is too big, edaphic seeper, plant causes soak root easily, influence root system is absorbed.
● illumination weak illumination is smaller, rising effect is less, calcic carriage ability is reduced, the suction of crop is calcic the amount is smaller.
Above if a lot of element such as soil, climate, root system, moisture is restricting calcium absorb, method of application is very so fundamental!
How to give crop filling calcium reasonably?1, logical choice calcium is fat
Different calcic fertilizer has different quality, the PH value of canopy room soil is 6.5 ～ more 7.5, should employ is alkalescent material or neutral fertilizer, wait like slaked lime, calcium nitrate, and use acidity or physiology acid material less. Common phosphate fertilizer is like calcium superphosphate, calcium magnesium phosphate, double superphosphate is main calcic fertile source, bone dust, plant ash all contains the calcium of certain amount, also be the calcic source that cannot ignore, can choose according to the circumstance.
Dissolve of water of element of nutrition of the minim in use calcic is fat (contain calcium not less than 120 grams / litre, contain magnesium not less than 20 grams / litre, contain zinc not less than 50 grams / litre, contain boron not less than 3 grams / litre) , filling calcium while compensatory and other in microelement, the attention chooses the fertilizer with saline low density, safer to crop.
2, master fertilization comfortable period
Enter in vegetable unripe progress after flourishing is long-term, edaphic calcic nutrition just begins to reduce, at the same time the calcic element inside vegetable lamina begins to decrease, at this moment employ calcic fertilizer is optimal period. To prevent vegetable to grow on production early days is short of calcium, can use base the fertilizer that apply calcium. In the canopy room that cultivates for years continuously, general mu apply 2000 ～ the organic fertilizer of 3000 kilograms of become thoroughly decomposed, rejoin calcium superphosphate 30 ～ 45 kilograms.
3, scientific method of application
Heavier to edaphic acidity vegetable big canopy, use the method that uses base fertilizer again more, namely every mus apply plant ash 100 kilograms or slaked lime 50 kilograms, adjust with rising the action of edaphic acid-base value. Particular way is will organic fertilizer and slaked lime or plant ash are mixed even, even ground is applied at upper range, break up to enter underground n cultivated land.
Opposite grows medium vegetable, after entering exuberant growth period especially, the methodological complement calcic nutrition that can use top application, general every mus use slaked lime 40 ～ 60 kilograms, the lime dosage of sanded sex earth decreases appropriately. Can complement not only so calcium is qualitative, and be helpful for counteracting edaphic acidity, raise PH cost, improve edaphic granule composition. Also but 80 kilograms of slaked lime or 50 kilograms of plant ash, reveal velar one end, ditch is deep 10 centimeters, chase after fertilizer apply water after channel bottom, the to earth up after underwater ooze velar.
Still but deep ploughing uses ground film to cover the method that help advance somebody's career, enhance its to protect water to maintain fat ability, maintain the relative stability of edaphic moisture, reduce calcic prediction of a person's luck in a given year.
The kind that also can tie medicine of the gush that prevent disease to use top application of face of blade helps calcic, top application concentration is average with 0.3% ～ 0.5% advisable. General but gush applies 0.1% ～ the calcium nitrate of 0.2% or 1% calcium superphosphate, lie between 15 days of or so gush, connect gush 3 ～ 4, the effect is better. The Gaimeide that recommends production of company of grand of nurture of Changsha the first month (candy mellow chela adds up to calcic magnesian fertilizer)
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Promote rooted crop to raise a root, erupt is type rooted -- bright after all?
