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DAP(Diammonium Phosphate); Diammonium hydrogen phosphate; Ammonium phosphate dibasic; Ammonium hydrogen phosphate; di-Ammonium hydrogen orthophosphate; Diammonium Phosphate(DAP); Phosphorus ICP standard solution Fluka; Di-Ammonium Phosphate

Diammonium phosphate, also known as diammonium phosphate (DAP), are the two kinds of nutrient of compound fertilizer containing nitrogen and phosphorus. A grey or dark grey particles, specific gravity 1.619, soluble in water, insoluble in ethanol. Have certain moisture absorption, easy decomposition in moist air, and volatilization of ammonia into ammonium dihydrogen phosphate. Aqueous solution is weakly alkaline, pH8.0.

Product specifications are as follows: 64% (N18: P2O546), 61% (N17: P2O545), 57% (N15: P2O542). To increase resistance to storage, the partial products package agent is added in the production process, make the product appearance are brown or yellow.

use

Diammonium phosphate is a kind of high concentration of phosphorus fertilizer, applicable to all kinds of crop and soil, the crops of nitrogen to phosphorus is particularly suited to xi, as a basic fertilizer or fertilizer, appropriate is deep.

Product physical properties: this product is soluble in water, dissolved solids less, apply various crops on the need of nitrogen, phosphorus, especially suitable for the lack of rain of the region as basal, seed manure, fertilizer

Dual fertilizer application: high-performance nitrogen and phosphorus, common specifications: physical neutral fertilizer, applicable to any soil and the vast majority of crops, particularly applicable to xi ammonium phosphate crops, as basic fertilizer or fertilizer, appropriate is deep. Used as a curing agent of urea-formaldehyde resin adhesives, with a 20% aqueous solution, curing speed of the slowest. Also used as additive flame retardants. If adding a small amount of DAP, natural rubber latex can effectively eliminate the magnesium ions in latex, does not reduce the tensile strength of the natural latex after vulcanization.

Application of

Urea, ammonium nitrate, ammonium chloride and good miscibility, because of its itself does not contain potassium, should cooperate with potash (potassium chloride, potassium sulfate) application.

Main ingredients: (NH4) 2 hpo4 products

The name of the crop

Fertilization methods

Effect of fertilization

Small wheat

Basal 40-50 kg/mu; Seedling stage, tillering stage, topdressing 15-20 kg/mu, with urea 10-15 kg/mu

Seedling, drought resistance, resistance to lodging, and increasing panicle number and grain

Water rice

Basal 40-50 kg/mu; Tillering stage 10-15 kg/mu, with urea 10-15 kg/mu

Promote tillering, prevent roots rotted, increase the number of ears, grain number and grain

Jade meters

Basal 35-45 kg/mu; Seedling stage, jointing stage, topdressing 20-25 kg/mu, with urea 15-20 kg/mu

Seedling, drought, lodging resistance, increase the number of corn cob, grain full

The cotton flower

Basal 40-50 kg/mu; Seedling stage, topdressing cotton boll period for 10 to 15 kg/mu, with urea 20 kg/mu

Increase the boll number per, reducing cotton boll shedding, improving the quality of cotton fiber

Spend life

Broadcasting 20-30 kg/mu as a basal, flowering period, fancy stitch topdressing 10-15 kg/mu

Number of pods per plant increased, strong seed, good quality

The big bean

Broadcasting 30-35 kg/mu basal; Flowering and podding stage 10-20 kg/mu

Number of pods per plant increased, strong seed

High beam

Basal 40-60 kg/mu; Seedling stage, topdressing urea 20 kg/mu

Strong seed, increase spike grain number

The soil bean

Basal 40-50 kg/mu; Budding period of 20 to 25 kg/mu

A big, high starch content

Fruits and vegetables

Basal 50 to 60 kg/mu, topdressing urea 20-30 kg/mu, two stage

Reduce the plant diseases and insect pests, increase production

Leaf vegetables

Broadcasting of 50-60 kg/mu as a basal, topdressing urea 20-30 kg/mu, two stage

Leaf, big, high output

West melon

Basal 50-60 kg/mu; Bentonite GuaQi topdressing 20-25 kg/mu, with a small amount of farmyard manure

Disease resistance, a big watermelon, sweet taste

The fruit trees (apple, pear, etc.)

Total annual 2-3 kg/strain, two or three times

A big, sweet taste, high yield

Portugal also

Basal 0.5 1 kg/plant, adopting the furrow fertilization, the GuaGuo after applying potassium hydrogen phosphate 0.5 1 kg/strains

Ear, sweet taste, high yield

Note:

1, fertilizer rate above is for reference only, fertilizer should be take into consideration the increase or decrease according to soil fertility condition.

2, when the application is given priority to with basal fertilizer is complementary, if use a combination of these, and with a small amount of farmyard manure effect is better.

3, as a seed manure and fertilizer, fertilizer should be placed in 5-10 cm away from the seeds, and fertilizer evenly dispersed, shoot to avoid burning, burning seedlings.

Matters needing attention

Physical neutral fertilizer, suitable for most of the crop and soil. In order to ensure the application of safety, the best and crop seeds for the separation of 7 to 10 cm. Sooner, and deep.

S26In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.

S36Wear suitable protective clothing.

R36/37/38Irritating to eyes, respiratory system and skin.