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 Wysłany: Wto 13:22, 26 Kwi 2011 Temat postu: GHD glätteisen günstig On the application |
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On the application of controlled release fertilizer and its supporting measures
Paper Keywords coated controlled release fertilizers; characteristics; fertilization Abstract coated controlled release fertilizers by coating, pre-season fertilizer in the release of crop growth models to nutrient release Law and crop nutrient uptake phase synchronization,[link widoczny dla zalogowanych], to achieve a type of fertilizer to improve fertilizer efficiency. The characteristics of controlled release fertilizer for requires the use of appropriate fertilization. Coated controlled release fertilizers by coating,[link widoczny dla zalogowanych], pre-fertilizer in the crop growing season, the release mode to Release of nutrients and crop nutrient uptake phase synchronization, so as to improve fertilizer efficiency (FUE) and a class of fertilizer. It can delay the initial release of nutrients, fertilizer plants to extend the effective period of nutrient absorption and utilization of nutrients remain in force and set the release time. 1 coated controlled release fertilizer with the characteristics relative to conventional fertilizer fertilizer 1.1 high utilization rate of fertilizer nutrients present, China's conventional evaporation through the air, ground penetration,[link widoczny dla zalogowanych], and surface water washout other reasons, the seasonal low utilization: 30% nitrogen 50%, phosphorus 10% to 20%, K 30% to 50%, while the coated controlled release fertilizers through the outer coating materials control, to avoid the loss of the fertilizer utilization of the above 80%. 1.2 increase yield and nutrient release through the capsule control,[link widoczny dla zalogowanych], steady supply of nutrients to crops regularly,[link widoczny dla zalogowanych], to avoid crop Tuofei and leggy, increase range mostly in the 1 500kg/hm2 above. 1.3 save time release fertilizer to use, most crops can be achieved only applied once a season's crop fertilizer, life without fertilization, saving time and effort to reduce waste. 1.4 bactericidal effect was insecticide controlled-release fertilizer in the multi-sulfur compounds, coating materials, can be bactericidal deworming, bag of fertilizer send more than 5kg fungicides. 1.5 to improve long-term use of soil coated controlled release fertilizers, nutrient release after the shell can Xushuibaoshang, fertilizer can play a ventilation function, so that long-term compaction of the soil becomes loose. 1.6 added sulfur sulfur crops is essential for crop growth in the amount of elements, application of fertilizer sulfur coated urea, the sulfur can be added crops, because the release after completion of the shell broken directly involved in the release of nutrients absorbed by crops. 2 coated controlled release fertilizer application technology coated controlled release fertilizer nutrient release rates and release periods are based on crop growth and nutrients uptake laws designed, therefore, season or a crop crop use only 1 release fertilizer, to meet crop nutrient needs throughout the growing season.
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