Special drought-resisting fertilizer for corns for seeds and preparation method thereof

Abstract

The invention relates to a special drought-resisting fertilizer for corns for seeds. The special drought-resisting fertilizer is prepared by mixing soybean meal organic fertilizer, an NPK (Nitrogen, Phosphorus and Potassium) compound fertilizer, ZnSO4.7H2O, a water-retaining agent and (NH4)2MoO4 according to the air dry weight percentage of (60-62) to (30-32) to (3-4) to (3-4) to (1-2). The special drought-resisting fertilizer for the corns for seeds provided by the invention is prepared by combining the water-retaining agent, the soybean meal organic fertilizer with the great water absorption rate, the NPK compound fertilizer, the ZnSO4.7H2O and the (NH4)2MoO4 according to the ratio, and the water retaining effects of the water-retaining agent and the soybean meal organic fertilizer are fused with nutrition effects of N, P, K, Zn and Mo, so that the problems that the natural water content of soil of fields of corns for seeds is low, seedlings are not ordered and are lacked and ridges are not continuous; the problems that droughts usually happen in a corn blooming period, so that the corns for seeds cannot pollinate normally, that the maturing rate is reduced and the like are solved. A target of soil nutrient balance is realized, the content of soil organic matters is improved and the utilization rate of soil moisture is improved.

Description

technical field [0001] The invention relates to the technical field of agricultural chemical fertilizers, in particular to a drought-resistant special fertilizer for seed production corn in Northwest my country; the invention also relates to a preparation method of the above-mentioned special drought-resistant fertilizer for seed production corn. Background technique [0002] In recent years, the corn seed production area in Northeast China has experienced drought year after year, and the seed production base has moved westward in a large scale. The corn seed production industry represented by the Hexi Corridor in Gansu has risen rapidly. The land here is vast, the climate is dry, the sunlight is sufficient, the temperature difference between day and night is large, and what is even more rare is that it has a natural isolation zone. Corn seed production has high yield, good quality, and low cost. It is an ideal place for domestic corn seed production and storage. The area is...

AI Technical Summary

Problems solved by technology

[0003] At present, the main problems are: ① The natural water content of the soil is low, and the emergence of seedlings is not uniform, resulting in lack of seedlings and broken ridges

②Drought is often encountered during the flowering period of corn, so that the seed production corn cannot be pollinated normally, and the seed setting rate is reduced

After 15 years of continuous planting of corn for seed production, the soil organic matter content was 23.61 g / kg. Compared with the 2-year planting period, the soil organic matter decreased by 4.23 g / kg. The total amount of pure nitrogen and phosphorus input of chemical fertilizers is 456 kg / ha, while the total amount of pure nitrogen and phosphorus input of organic fertilizers is 68.40 kg / ha. The ratio of pure nitrogen and phosphorus input of chemical fertilizers to the total amount of pure nitrogen and phosphorus input of organic fertilizers is 1: 0.15, the increase of corn yield mainly depends on the application of chemical fertilizers, long-term large-scale application of chemical fertilizers, although the corn yield is increased, but eventually the soil organic matter content decreases

④Excessive application of chemical fertilizers reduces the utilization of fertilizers and increases the cost of fertilization

⑤ The active ingredients and proportions of the compound fertilizers circulating in the market do not conform to the nutrient status of corn farming in this area, and there is a lack of special fertilizers for seed corn production, resulting in an imbalance of soil nutrients

Second, for a long time, farmers have only paid attention to the application of nitrogen and phosphorus fertilizers, and have no habit of applying potassium fertilizers.

Third, the amount of organic fertilizer application is insufficient

⑥The planting area is large, the continuous cropping period is long, and the problem of soil compaction is more prominent

In recent years, the research on compound fertilizers has received widespread attention, but there have been no reports on special fertilizers for drought resistance in seed production

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