Efficiency Of Ultra-fine Phosphate Rock Powder With Different Types Of Soil

Phosphorus is one of the essential nutrients for plant growth and development; it is involved in a variety of metabolic processes in plants growing position in the important agricultural production. With the rapid development of agriculture in recent years, the amount of fertilizer increased year by year, while the total amount of phosphate resources-rich but mostly low grade phosphate rock. Therefore,the development of low-grade phosphate rock and fertilizer to improve its efficiency a top priority. As a low-grade phosphate rock fertilizer in recent years by the widespread concern, which is applied directly onto the soil, has been widely promoted; in order to further enhance its phosphorus release rate, the researchers developed a technique to make ultra-fine grain diameter to micro-grain level. In this paper, pot experiment by planting canola and ryegrass, systematic study of rock phosphate ceramics on red soil, brown soil, soil, cinnamon and paddy soil are five common types of soil on soil fertility and crop growth physiology impact indicators, with a view to ultra-fine phosphate rock powder reasonable application of rock phosphate to provide a scientific basis; while planting is widely used as pasture and green manure ryegrass, to some extent, provide a theoretical basis for reasonable P fertilizer.The main findings are as follows:1. Through ultrafine technology obtained micro crystallization rock phosphate particle size of 2.12μm, specific surface area of 1783.42kg/m2, 90% of the particle size 5.27μm or less, than the average rock phosphate particle size(0.15mm) was significantly reduced. Phosphate most common non-water-soluble phosphorus in phosphorus, but ordinary rock phosphate after the ultra-fine processing technology, with a 2% citric acid leaching six consecutive phosphorus are eluted. Compared with triple superphosphate, rock phosphate micro crystallization moderate phosphorus release, indicating micro crystallization phosphate rock with a strong aftereffect. This slow dissolution of phosphorus in a large number of features that make it fashionable facilities will not cause harm to crops, but can serve as an ideal long-term slow-release fertilizer, applied to a suitable slope, wind protection and sand-free arable land.2. Ultra-fine phosphate rock powder can significantly improve the soil available phosphorus content, the same process among different brown soil with the highest available phosphorus content, followed by cinnamon, the lowest tide soil; in the red soil, brown soil and paddy soil and other acidic on soil phosphorus release of better than alkaline soil cinnamon Soil and Chao soil. On the red soil, in descending order of each soil available phosphorus content is HN2>HN3>SP>HN1> CK, HN2 processing of phosphate rock phosphate microcrystalline highest emissions, significantly higher than other treatments, and so the total price of HN3 treatment was significantly higher than that SP treatment; on brown and paddy soil, in descending order of each soil available phosphorus content is HN2> HN3> SP> HN1> CK, among HN3 processing and SP treatment was not significantly different; cinnamon and Chao Soil on each level of the order of soil available phosphorus content is HN2> SP> HN3> HN1> CK, among HN3 processing and SP treatments were not significant.3. Different effects of different phosphorus fertilization on the growth and quality of rapeseed and nitrogen metabolism of. Rape in the leaf length, leaf width, dry weight and chlorophyll content of rapeseed and Vc content in different types of soil is different among different treatments on five soil treatments were significantly higher than the control treatment, HN2 treatment works best Jia, were significantly higher than other treatments, the red soil and paddy, HN3 treatment significantly higher than the SP treatment, the cinnamon, brown soil and soil, the total price of HN3 effects processing and SP treatment was not significantly different; affected by different treatment of different types of soil Phosphorus content, total nitrogen content and nitrogen metabolism in canola also it will be different, the highest nitrogen content in the brown soil nitrogen metabolism strongest micro crystallization phosphate rock processing the effect of red soil, brown soil and paddy soil than cinnamon and tide on goods.4. In five different soil types, microcrystalline powder can be more in control of phosphate significantly increase total phosphorus and phosphorus uptake Cole. Brown and paddy soil, HN2 processing rapeseed highest total phosphorus content, etc. under the general price conditions, between brown and paddy soil HN3 processing and SP treatments were not significant, increase in the order of treatment is HN2 > HN3> SP > HN1>CK; P uptake rapeseed aboveground and belowground also significantly increased compared with the control; cinnamon and alluvial soil, HN2 best effect, followed by the SP processing and HN3 process between treatments were not significant, each processing rapeseed aboveground and belowground phosphorus uptake compared to the control significantly increase processing; red soils, HN2 treatment effect best, followed HN3 processing and HN1 treatment and two treatments were not significant, rape aboveground and belowground phosphorus absorption amount HN2 handle the most significant, than to improved treatments.5. After ryegrass growing season and harvest three times to take soil samples, different treatment of different soil types on different soil total phosphorus and available phosphorus. Higher early in Brown Soil and soil phosphorus content, ultra-fine phosphate rock powder and triple superphosphate processing treatment difference was not significant, the three dug up the soil are treated with SP phosphorus content; in red soil, paddy soil and alluvial soil, low soil phosphorus content at the beginning, the different treatment was applied to different soil after fertilizer with soil phosphorus content of the period, the content is different, in the first and second earth time among the treatments to SP high soil total phosphorus and available phosphorus, third soil phosphorus content in soil treated with HN2 highest, and in the red soil was significantly higher than SP treatment HN2 process described microcrystalline phosphorus Mineral better and bigger aftereffect dissolution in acid soil.6. Plant height and tiller number at 85 days mowing ryegrass, fresh weight and dry weight, crude protein and crude fiber content reaches maximum; various fertilizer could increase the content of chlorophyll ryegrass aboveground, all treatments on different soils SP to best effect, followed HN2 process, the red soil, brown soil and soil, among SP processing and HN2 treatment was not significantly different, SP dealing with cinnamon and paddy soil than HN2 processed and significant differences between the two treatments, each soil treatment was significantly better than HN2、 HN1processing; Different names on different types of rock phosphate soil microcrystalline different treatment of total phosphorus content of the soil, brown soil, paddy soil and soil, three SP mowing process the best, in 85 days highest total phosphorus mowing each treatment ryegrass content, total phosphorus increase during 185 days mowing HN2 treated ryegrass maximum content, on cinnamon, three mowing SP treatment was significantly better than other treatments, more than control ryegrass treated biggest increase phosphorus content.7. Calcium content ryegrass cinnamon and brown on higher levels, lower levels on red tide soil, red soil HN2 highest calcium content processing ryegrass, ryegrass other on four soil calcium content the order for the SP> HN2 > HN1 > CK; magnesium content ryegrass small differences in the content of five soil, generally between 320 ~ 484mg/kg, on the damp soil and cinnamon, SP handle black the magnesium content of the straw highest, red soil, brown soil and paddy soil, HN2 process ryegrass highest magnesium content; ryegrass highest iron content in red soil content, the content of SP treatment reaches 345.19mg/kg, the cinnamon and rice each processing soil ryegrass iron content difference was not significant, but were higher than the control treatment, the brown and the tide soil, HN2 treatment than other treatments, but with SP between treatments were not significant; zinc content ryegrass at the lowest soil, the cinnamon, brown, red soil, the zinc content of SP treatment was significantly higher than other treatments, the paddy soil, HN2 zinc was significantly higher than other treatments.