When boron is deficient in boron, the stems and leaves are hypertrophied and the leaves are purple, and the apical meristems are dead. As a result, the "top withers" are formed, the filaments are stretched and the tillers are not normal, the ear development is not good, the seed setting rate is extremely poor, and the late spikes are serious. Not blasphemy." Application of boron fertilizer on boron-deficient soil can increase wheat production by more than 10%. Application method: as base fertilizer. One kilogram of borax per acre is applied to the soil before sowing; as a seed fertilizer. 10 grams of borax, soluble in 5 kg of water, mixed with 50 kg of wheat seed, or the selected wheat seeds in 0.01% ~ 0.05% borax solution soak 6 ~ 12 hours; outside the top dressing, in the wheat seedling stage, jointing Period and booting stage, spraying 0.1%~0.2% borax solution once.
Manganese deficiency, manganese deficiency, the initial chlorosis between the veins, and the emergence of small yellow-white spots, then gradually expanded, even into a brown-brown stripe, near the tip of the leaf has a clear weakening of the horizontal lines, resulting in the upper end of the leaf Sagging bent; poor root development, some black death; plant growth is slow, with no or very little delivery. Application method: as basal fertilizer, use 1 kg of manganese sulfate per acre and apply it to the soil in combination with site preparation; as a seed fertilizer, soak 4-6 g of manganese sulfate per kilogram of wheat seeds; apply fertilizer outside roots, in the wheat seedling stage, jointing During the period of flowering, or during the period of flowering, or when the plants showed symptoms of manganese deficiency, they were sprayed with 0.1%~0.2% manganese sulfate solution.
When copper deficiency is copper-deficient, the new leaves are gray-green, with whitened leaves, and distorted leaves. Grayish white spots or stripes appear in the lower part of the leaf sheath. The old leaves are easily broken or bent at the ligule; the internodes of the copper are shortened and the heading is small. The spikes are twisted, the secondary flowers on the spikelets are aborted, and the grain is underdeveloped or shrivelled. Application method: as basal fertilizer, use 1~1.5 kg of copper sulfate per acre, and apply it to the soil when the soil is settling. When making the seed fertilizer, sow the seeds with 0.2%~0.3% of the seed amount with copper sulfate, and mix and boring after mixing. ~17 hours; top dressing outside the roots; during the growing season, wheat was found to be copper-deficient and timely sprayed with 0.2%~0.4% copper sulfate solution.
When zinc deficiency is deficient in zinc, the plants are dwarfed and the leaf margins are twisted or shrunk. The veins on both sides turn green from yellow to white, and yellow, white and green stripes appear on the edges. Application method: as basal fertilizer, use 1~2 kg of zinc sulfate per acre, apply it to the soil when the soil is settling; soak seed, put the selected wheat seeds into 0.05% zinc sulfate solution, soak for 12~24 hours, remove and dry Seeding; for topdressing, in the wheat seedling stage, 1 kg of zinc sulfate per mu, against fine dry soil or organic fertilizer 15 to 20 kg, the ditch applied in the interline, the sooner the better the effect; outside the top dressing, in the wheat seedlings During the period, jointing stage, and after heading, or when the plants exhibit symptoms of zinc deficiency, they are sprayed with 0.1 to 0.2% zinc sulfate solution.
When molybdenum is deficient in molybdenum, the plants are dwarf and grow slowly, and the whole leaves die when they are severe. Application method: seed dressing, using ammonium molybdate 2~6g per kilogram of wheat seed; first dissolving ammonium molybdate with warm water at 40°C, then dressing; soaking seeds, dipping wheat seeds with 0.05%~0.1% ammonium molybdate solution 12 Hours, remove and air dry sowing; outside the top dressing, in the wheat seedling stage, jointing stage, booting stage or plant emergence of symptoms of molybdenum, with 0.01% ~ 0.1% ammonium molybdate solution foliar spray.
When the iron fertilizer is iron-deficient, the leaves have yellow-green color, small spots occur, white patches or stripes appear on the young leaves, and the old leaves are withered. Application method: In the early stage of wheat growth or when iron deficiency is found in the plant, spray it with 0.2%~0.3% ferrous sulfate solution.
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