The Role of Boron Fertilizer in Wheat Growth and Its Precautions

Loss plays an important role. The lack of boron at the booting stage of wheat affected the normal development of pistil and stamen, reduced the number of panicles, increased the empty shell, and decreased the grain weight. Boron deficiency during flowering will cause thin anthers, open cracks, no loose powder, less pollen or deformity, sometimes no pollen, lateral expansion of ovary, early glume is not closed, late withering, growth period delayed. Heading difficulties, ear often deformed, resulting in empty taro. The number of grains and 1000-grain weight of wheat were reduced, which resulted in a decrease in yield and a decrease in quality. Sometimes the heading is performed while heading, sometimes it is not heading or only flowering is expressed as "ear but not real". Later leaves will appear "brown-brown mould." When wheat is seriously deficient in boron, it will cause the growth of roots to be blocked, and it will be thick, short and flat. In the early growth stage, the plants will be short and the tillers will be abnormal. The upper leaves will be dark green or purple, and the leaves will become smaller and harder. The death of the organization results in the formation of a "top wither" and the tip of the leaf appears "purple-brown".

1. Benefits of boron supplementation: 600 kg of wheat per mu will need to absorb 22 grams of pure boron. The addition of boron fertilizer can increase the seed setting rate of wheat and make the grain full. In general, the “Blue Crystal Code” containing 50 g of multi-element micronutrients containing regulators is sprayed one or two times. It can be “one injection and six supplements” to increase disease resistance, increase the utilization of nitrogen, phosphorus and potassium, and increase production significantly. . The sprayed borax solution with a concentration of 0.05% to 0.1% was sprayed during the tillering and jointing stages (but the effect of increasing production was not as significant as that of zinc, boron, copper and molybdenum).

2. Precautions

(1) Sandy soil with shallow plough and low organic matter is prone to boron deficiency.

(2) Too much nitrogen fertilizer induces boron deficiency.

(3) The temperature is too low, humid, and too dry, which is not conducive to the release of boron and symptoms of boron deficiency.

(4) If too much boron is used, the growth of wheat will be inhibited and boron poisoning will occur. The emergence of wheat will be delayed, the tips of the leaves will be yellow, the chlorotic leaves will be yellow-green, brown spots will appear, the old leaves will be yellow, the tillers will be reduced, and the death will be serious. .

(5) Foliage spraying is better, not suitable for soil use. According to "Environmental Protection," it is reported that once boron pollutes groundwater and contaminated soil, it will be difficult to eliminate its effects in a short period of time and further damage crops and damage human health.

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