Grapes, whether planted in the open or in the yard, are valuable tree species. The giant peaks in Xi'an Yanqiao, the Hutai series in Huxian, and the Hongdi in northern Fujian have become one of the leading industries for local wealth. As fruit growers only pay attention to the use of nitrogen, phosphorus, and potassium for many years and neglect the supply of trace elements, they produce a variety of representative physiological deficiencies, also called physiological diseases. In this investigation, zinc deficiency should cause growers. High attention, and the rapid growth of zinc deficiency every year, has brought immeasurable loss of planting. This article specifically introduces the symptoms and correction of zinc deficiency, for reference of grape growers.

First, the symptoms of zinc deficiency

From leaves to leaves, the leaves become smaller and narrower, the internodes become shorter, the leaves grow densely and the clumps can grow into rosettes, and they can also grow in a circle, with little concentration and growth. When the leaves reach the end, the leaves die and the whole shoots dry up. In exchange.

From the fruit point of view, nutritional deficiencies, pollination is not perfect, there are a number of seedless fruit, small fruit, deformity, no food value, resulting in few fruit set, thin fruit, large particles are large, small particles are small, the size of grain is clear, Loss of the inherent characteristics of the original species.

Judging from the tree body, the output of the trees dropped sharply because of abnormalities in leaves, branches and fruits, and disorderly and disorderly structures that affected the overall photosynthesis.

Second, the reasons for the lack of factors: a single fertilization, very few years, or do not apply trace elements such as zinc, resulting in the lack of zinc in the soil, the tree will be no zinc or a small amount of zinc, grapes do not reach the amount needed.

One mention of fertilization is diammonium or superphosphate. There is a large amount of phosphorus in the soil, and there is more phosphorus, which affects the absorption of zinc and produces antagonistic effects. Zinc is blocked by phosphorus and the grapes do not absorb, resulting in zinc deficiency. There is also calcareous soil that limits the absorption of zinc.

Third, the corrective method: to make up for the physiological diseases caused by zinc deficiency, to supply sufficient zinc, can correct the physiological diseases caused by zinc deficiency. Spraying 0.1% zinc sulfate solution 7-10 days before flowering can prevent zinc deficiency.

For lime-rich soils, with or without lime or calcium-rich fertilizers, zinc is easily deposited in the soil due to its high calcium content and is not absorbed by the roots and must be restricted.

During the growth period, three times of chelating trace elements, such as Strecope, is sprayed with Stadecopol. When fertilizer is applied, Stadecopol is added to the fertilizer. Zinc and various trace elements that are easily absorbed by the grapes can be used for supplementation.

From agricultural measures, weeding, weeding, soil rejuvenation, and application of large ternary organic-inorganic biological fertilizers promote the absorption of zinc and improve the utilization of zinc.

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