The end of application of fertilizer can prevent wheat yellow

The lack of zinc in wheat will shorten the internodes, delay the emergence of the flowers and make them untidy, and the leaves will appear white strips or bands along the sides of the main vein. Iron deficiency will cause chlorosis between the leaves of the leaves, and the more recent the new leaves are, the more serious the leaves are, even the heart leaves will not grow. The plants will grow poorly, dwarf the growth period, and delay the growth period, or even fail to ear. Calcium deficiency will make the young leaves curl, yellow leaves edge, less seeds, more pods. In the absence of boron, there will be boron nutrient disorder or disruption, stamen dysplasia, filament elongation, anther thinning, and inability to crack and pollinate to form empty pods or secondary spikelets on the ear.

In view of this situation, under the guidance of the author, when more than 30 members of the local planting cooperatives planted wheat for seven or eight years in a row, they applied a certain amount of zinc, iron and calcium on the basis of sufficient nitrogen, phosphorus and potassium base fertilizers. , boron and other trace element fertilizers, each year after the emergence of wheat to return to green, jointing, basically no yellow seedlings, seedlings thin, weak not long phenomenon, the contrast effect is obvious.

The specific method is to use 6 kg of ferrous sulfate, 3 kg of zinc sulfate, 0.5 kg of calcium nitrate, and 1 kg of borax per acre before the site preparation, mix evenly with nitrogen, phosphorus, and potassium compound fertilizers, and plow the plots after spreading.

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