Trace elements play an important role in the growth and development of wheat, which can not be replaced by a large number of elements (such as nitrogen, phosphorus, potassium, etc.). Scientifically increasing trace element fertilizers is an important technical measure for the high and stable yield of wheat.
When iron-fertilized wheat is iron-deficient, the leaves are yellow-green in color, small spots occur, white patches or stripes appear in young leaves, and old leaves are withered. Application method: In the early stage of wheat growth or when iron deficiency is found in the plant, spray with 0.2-0.3% ferrous sulfate solution.
When Boron was deficient in boron, the stems and leaves were hypertrophic and bent, the leaves were purple, and the apical meristems were dead. The top dead was formed. The filament elongation and the tillers were not normal. The ear development was not good and the seed setting rate was extremely poor. "Spike but not squeak." Application of boron fertilizer on boron-deficient soil can increase wheat production by more than 10%. Application method: (1) as base fertilizer. One kilogram of borax per acre was applied to the soil before sowing; (2) for seed fertilizer. 10 grams of borax, soluble in 5 kilograms of water, mixed with 50 kg of wheat seed, or the selected wheat seeds into 0.01 ~ 0.05% borax solution soak 6 ~ 12 hours; (3) top dressing. In the wheat seedling stage, jointing stage, and booting stage, spray 0.1-0.2% borax solution once.
Manganese fertilization When wheat is deficient in manganese, the veins depigment during the initial period, yellowish-white spots appear, and then they gradually enlarge, forming yellow-brown stripe spots, and there is a clear horizontal line of weakness near the tips of the leaves. The upper end of the leaf blade is sagging; roots are poorly developed and some of them darken and die; plants grow slowly, with no or very few tillers. Application method: (1) as base fertilizer. 1 kg of manganese sulfate per acre, combined with soil preparation applied to the soil; (2) for seed fertilizer. When sowing, mix 4-6 grams of manganese sulfate per kilogram of wheat seed; (3) top-dressing fertilizer. In the wheat seedling stage, the jointing stage, the flowering stage, or when the plants showed symptoms of manganese deficiency, they were sprayed with 0.1-0.2% manganese sulfate solution.
When the copper fertilizer is copper-deficient, the new leaves are gray-green, the leaves are whitened, the leaves are twisted, and gray spots or stripes appear on the lower part of the leaf sheath. The old leaves are easily broken or bent at the ligule; Heading or twisting of the spikes, secondary flowers on the spikelets aborted, grain incomplete or shrinking. Application method: (1) as base fertilizer. Use 1 to 1.5 kg of copper sulfate per acre, apply it to the soil when it is settling, and (2) make a fertilizer. When sowing, use copper sulphate to seed 0.2 to 0.3% of the seed, mix and boring for 12 to 17 hours; (3) top dressing. During the growing season, wheat was found to be copper-deficient and timely sprayed with 0.2-0.4% copper sulfate solution.
In zinc deficiency wheat, the plants are dwarfed and clustered, and the leaf margins are twisted or shrunken. The veins turn from green to yellow on both sides of the veins, and yellow, white and green stripes appear on the edges. According to local comparison tests, applying zinc fertilizer in zinc-deficient areas can increase wheat yield by 10% to 18%. Application method: (1) as base fertilizer. Use 1 to 2 kg of zinc sulfate per acre, apply it to the soil when it is settling; (2) soak seeds. Put the selected wheat seeds into a 0.05% zinc sulfate solution, soak for 12 to 24 hours, remove and dry to dry, and (3) make top dressing. In the wheat seedling stage, 1 kg of zinc sulfate is used per acre, and 15-20 kg of fine dry soil or organic fertilizer is applied to the rows. The earlier the effect is, the better; (4) The fertilizer is applied outside the root. In the wheat seedling stage, jointing stage, and after heading, or when symptoms of zinc deficiency occur in plants, foliar spraying is performed with 0.1 to 0.2% zinc sulfate solution.
When iron-fertilized wheat is iron-deficient, the leaves are yellow-green in color, small spots occur, white patches or stripes appear in young leaves, and old leaves are withered. Application method: In the early stage of wheat growth or when iron deficiency is found in the plant, spray with 0.2-0.3% ferrous sulfate solution.
When Boron was deficient in boron, the stems and leaves were hypertrophic and bent, the leaves were purple, and the apical meristems were dead. The top dead was formed. The filament elongation and the tillers were not normal. The ear development was not good and the seed setting rate was extremely poor. "Spike but not squeak." Application of boron fertilizer on boron-deficient soil can increase wheat production by more than 10%. Application method: (1) as base fertilizer. One kilogram of borax per acre was applied to the soil before sowing; (2) for seed fertilizer. 10 grams of borax, soluble in 5 kilograms of water, mixed with 50 kg of wheat seed, or the selected wheat seeds into 0.01 ~ 0.05% borax solution soak 6 ~ 12 hours; (3) top dressing. In the wheat seedling stage, jointing stage, and booting stage, spray 0.1-0.2% borax solution once.
Manganese fertilization When wheat is deficient in manganese, the veins depigment during the initial period, yellowish-white spots appear, and then they gradually enlarge, forming yellow-brown stripe spots, and there is a clear horizontal line of weakness near the tips of the leaves. The upper end of the leaf blade is sagging; roots are poorly developed and some of them darken and die; plants grow slowly, with no or very few tillers. Application method: (1) as base fertilizer. 1 kg of manganese sulfate per acre, combined with soil preparation applied to the soil; (2) for seed fertilizer. When sowing, mix 4-6 grams of manganese sulfate per kilogram of wheat seed; (3) top-dressing fertilizer. In the wheat seedling stage, the jointing stage, the flowering stage, or when the plants showed symptoms of manganese deficiency, they were sprayed with 0.1-0.2% manganese sulfate solution.
When the copper fertilizer is copper-deficient, the new leaves are gray-green, the leaves are whitened, the leaves are twisted, and gray spots or stripes appear on the lower part of the leaf sheath. The old leaves are easily broken or bent at the ligule; Heading or twisting of the spikes, secondary flowers on the spikelets aborted, grain incomplete or shrinking. Application method: (1) as base fertilizer. Use 1 to 1.5 kg of copper sulfate per acre, apply it to the soil when it is settling, and (2) make a fertilizer. When sowing, use copper sulphate to seed 0.2 to 0.3% of the seed, mix and boring for 12 to 17 hours; (3) top dressing. During the growing season, wheat was found to be copper-deficient and timely sprayed with 0.2-0.4% copper sulfate solution.
In zinc deficiency wheat, the plants are dwarfed and clustered, and the leaf margins are twisted or shrunken. The veins turn from green to yellow on both sides of the veins, and yellow, white and green stripes appear on the edges. According to local comparison tests, applying zinc fertilizer in zinc-deficient areas can increase wheat yield by 10% to 18%. Application method: (1) as base fertilizer. Use 1 to 2 kg of zinc sulfate per acre, apply it to the soil when it is settling; (2) soak seeds. Put the selected wheat seeds into a 0.05% zinc sulfate solution, soak for 12 to 24 hours, remove and dry to dry, and (3) make top dressing. In the wheat seedling stage, 1 kg of zinc sulfate is used per acre, and 15-20 kg of fine dry soil or organic fertilizer is applied to the rows. The earlier the effect is, the better; (4) The fertilizer is applied outside the root. In the wheat seedling stage, jointing stage, and after heading, or when symptoms of zinc deficiency occur in plants, foliar spraying is performed with 0.1 to 0.2% zinc sulfate solution.
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