Maize trace element and micro-fertilizer application technology
2018-08-10 00:01:59
First, the need for the profile of corn trace elements increased with the increase of production, according to the Institute of Corn Research of Shandong Academy of Agricultural Sciences and Shandong Agricultural University: in the range of 150 to 560 kg in 667 m 2, every 6
The total amount of zinc absorbed at 67 m 2 is 4.5 to 30.0 g, and the manganese is 3.24 to 16.89 g.
Copper is 1.20 to 6.76 grams, and aluminum is 0.15 to 0.79 grams, with an average of 100 per production.
Kilograms of grain need to absorb 2.94 ~ 5.35 grams of zinc, 2.16 ~ 3.00 grams of manganese, copper 0.7
9～1.20g, aluminum 0.10～0.14g; corn 667m2 yield 650～79
At 3 kg, the total amount of zinc absorbed is 22.75 to 29.74 g, and manganese is 22.3 to 27.2.
8 grams, copper 7.41 ~ 9.91 grams, iron 162.5 ~ 496.42 grams, the average formation of 1
00 kg of grain needs to absorb zinc to 3.5 to 3.75 grams, and manganese to 3.43 to 3.44 grams.
Copper 1.14 to 1.25 grams, iron 25.0 to 62.6 grams.
It is generally believed that the critical value of the lack of trace elements in corn soil is: effective zinc per kilogram of soil 0.6
Mg, easy to reduce manganese 100 mg, water-soluble boron 0.5 mg, content below the critical value of the soil,
A good yield increase effect can be obtained by applying the corresponding micro-fertilizer.
Looking at the national situation analysis, with the increase of the multiple cropping index and the increase of the yield, the trace elements that the crops have taken away from the soil are also increasing, resulting in the gradual decline of trace elements in the soil. Zinc deficiency and boron deficiency occur in most parts of the country, and manganese is deficient in some areas. According to laboratory analysis, nearly 70% of the cultivated land in Shandong Province has a zinc content below the critical value. The average water-soluble boron content in the province is only 0.48 mg per kg of soil, and about 25% of the cultivated land is deficient in manganese, and the content is <100 mg. . Therefore, the application of zinc fertilizer, boron fertilizer and manganese fertilizer in some areas,
The effect of increasing production is very significant. Shandong's test increased the yield of zinc fertilizer by 1 to 2 kg per 667 m 2
%, the application of boron fertilizer (including effective boron 11.6%) 0.5 ~ 1.0 kg, the average increase of 14.2
%, the soil is easy to reduce manganese content less than 100 mg, 1 to 2 kg of manganese sulfate per 667 m2,
Increased production by 9.4%. In Henan Province, the average yield of zinc fertilizer increased by 12.7%, and the yield of boron fertilizer increased by 13.2.
%, the yield of manganese is close to 10.
Second, the application of technology micro-fertilizer application methods, mainly base fertilizer, root spray, soaking seeds or seed dressing.
1. Zinc fertilizer mainly has zinc sulfate, zinc oxide and zinc carbonate, and the application of zinc sulfate is most common. Since zinc moves slowly in the soil and has some residual effect, the application of base fertilizer is the best, every 667 m 2
Use zinc sulphate 1~1.5 kg, mix with other organic fertilizers or separate to the ground, plough up the soil, or open the ditch strips, soak for 12 hours with 0.1% zinc sulphate solution before sowing. The weight ratio of seed dressing seeds to zinc sulfate is 150 to 250:1. Spray, spray 0.2% zinc sulphate at the seedling stage and jointing stage, spray about 50 kg per 667 m 2 each time.
2. The main commonly used boron fertilizers are easily soluble boric acid and borax. It is best to apply base fertilizer, followed by foliar spray, and again seed dressing. When applied as a base fertilizer, use 0.5 kg of boron fertilizer per 667 m 2 , mix with organic fertilizer or fine soil, sprinkle it on the ground, plow the soil, or open the ditch. Foliar spray generally uses 100 grams of easily soluble boron fertilizer per 667 m 2 , 50 kg of water, and is formulated into a 0.2 boron aqueous solution, which is sprayed at jointing stage. The concentration of the boron fertilizer is 0.01% to 0.1%, and the immersion is 8 to 12 hours.
3, manganese fertilizer commonly used is mainly manganese sulfate, 1 to 2 kg of manganese sulfate per 667 m 2
As the base fertilizer is removed, the plough is turned into the soil, or the ditch is applied. Micro-fertilizer should avoid the application of acupoints to avoid local high concentration and poison.
â– Han Xueyu, Institute of Plant Protection, Shaanxi Academy of Agricultural Sciences (712100)
The total amount of zinc absorbed at 67 m 2 is 4.5 to 30.0 g, and the manganese is 3.24 to 16.89 g.
Copper is 1.20 to 6.76 grams, and aluminum is 0.15 to 0.79 grams, with an average of 100 per production.
Kilograms of grain need to absorb 2.94 ~ 5.35 grams of zinc, 2.16 ~ 3.00 grams of manganese, copper 0.7
9～1.20g, aluminum 0.10～0.14g; corn 667m2 yield 650～79
At 3 kg, the total amount of zinc absorbed is 22.75 to 29.74 g, and manganese is 22.3 to 27.2.
8 grams, copper 7.41 ~ 9.91 grams, iron 162.5 ~ 496.42 grams, the average formation of 1
00 kg of grain needs to absorb zinc to 3.5 to 3.75 grams, and manganese to 3.43 to 3.44 grams.
Copper 1.14 to 1.25 grams, iron 25.0 to 62.6 grams.
It is generally believed that the critical value of the lack of trace elements in corn soil is: effective zinc per kilogram of soil 0.6
Mg, easy to reduce manganese 100 mg, water-soluble boron 0.5 mg, content below the critical value of the soil,
A good yield increase effect can be obtained by applying the corresponding micro-fertilizer.
Looking at the national situation analysis, with the increase of the multiple cropping index and the increase of the yield, the trace elements that the crops have taken away from the soil are also increasing, resulting in the gradual decline of trace elements in the soil. Zinc deficiency and boron deficiency occur in most parts of the country, and manganese is deficient in some areas. According to laboratory analysis, nearly 70% of the cultivated land in Shandong Province has a zinc content below the critical value. The average water-soluble boron content in the province is only 0.48 mg per kg of soil, and about 25% of the cultivated land is deficient in manganese, and the content is <100 mg. . Therefore, the application of zinc fertilizer, boron fertilizer and manganese fertilizer in some areas,
The effect of increasing production is very significant. Shandong's test increased the yield of zinc fertilizer by 1 to 2 kg per 667 m 2
%, the application of boron fertilizer (including effective boron 11.6%) 0.5 ~ 1.0 kg, the average increase of 14.2
%, the soil is easy to reduce manganese content less than 100 mg, 1 to 2 kg of manganese sulfate per 667 m2,
Increased production by 9.4%. In Henan Province, the average yield of zinc fertilizer increased by 12.7%, and the yield of boron fertilizer increased by 13.2.
%, the yield of manganese is close to 10.
Second, the application of technology micro-fertilizer application methods, mainly base fertilizer, root spray, soaking seeds or seed dressing.
1. Zinc fertilizer mainly has zinc sulfate, zinc oxide and zinc carbonate, and the application of zinc sulfate is most common. Since zinc moves slowly in the soil and has some residual effect, the application of base fertilizer is the best, every 667 m 2
Use zinc sulphate 1~1.5 kg, mix with other organic fertilizers or separate to the ground, plough up the soil, or open the ditch strips, soak for 12 hours with 0.1% zinc sulphate solution before sowing. The weight ratio of seed dressing seeds to zinc sulfate is 150 to 250:1. Spray, spray 0.2% zinc sulphate at the seedling stage and jointing stage, spray about 50 kg per 667 m 2 each time.
2. The main commonly used boron fertilizers are easily soluble boric acid and borax. It is best to apply base fertilizer, followed by foliar spray, and again seed dressing. When applied as a base fertilizer, use 0.5 kg of boron fertilizer per 667 m 2 , mix with organic fertilizer or fine soil, sprinkle it on the ground, plow the soil, or open the ditch. Foliar spray generally uses 100 grams of easily soluble boron fertilizer per 667 m 2 , 50 kg of water, and is formulated into a 0.2 boron aqueous solution, which is sprayed at jointing stage. The concentration of the boron fertilizer is 0.01% to 0.1%, and the immersion is 8 to 12 hours.
3, manganese fertilizer commonly used is mainly manganese sulfate, 1 to 2 kg of manganese sulfate per 667 m 2
As the base fertilizer is removed, the plough is turned into the soil, or the ditch is applied. Micro-fertilizer should avoid the application of acupoints to avoid local high concentration and poison.
â– Han Xueyu, Institute of Plant Protection, Shaanxi Academy of Agricultural Sciences (712100)
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