绿色科技
綠色科技
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LVSE DASHIJIU
2012年
4期
129-131
,共3页
作物%控效肥%溶出率%评价
作物%控效肥%溶齣率%評價
작물%공효비%용출솔%평개
the tropics%Polymer-coating-controlled-release fertilizer%rate of N release%evalution methods
采用水浸泡法对5种包膜控效肥（不包括对照）试样的养分溶出率进行了比较测定,测得各种肥料的初期溶出率、微分溶出率分别为,自行研制控效CAF1：1.14、1.78;CAF4：1.59、1.84;CAF5：1.37、1.76;国外肥料FB：1.01、1.24;FZ：1.24、1.27,自行研制的肥料的初期溶出率平均值为1.37,微分溶出率为1.79;国外肥料为1.13、1.25,自行研制的肥料的初期溶出率与微分溶出率分别高于国外肥料,但都达到了国际标准（初期溶出率小于15%、微分溶出率在0.25%～2.5%之间）。同时用土壤淋溶法对自制的2种控效肥和1种进口肥进行了N溶出量的测定,结果表明：控效肥土壤淋溶出量与对照比较为显著,6d内CAF1、CAF5溶出N总量分别为对照的33.3%、36.1%,同时将两种方法所得出的结果进行了综合分析,对控效效果作出初步评价,为作物合理施肥提供参考。
採用水浸泡法對5種包膜控效肥（不包括對照）試樣的養分溶齣率進行瞭比較測定,測得各種肥料的初期溶齣率、微分溶齣率分彆為,自行研製控效CAF1：1.14、1.78;CAF4：1.59、1.84;CAF5：1.37、1.76;國外肥料FB：1.01、1.24;FZ：1.24、1.27,自行研製的肥料的初期溶齣率平均值為1.37,微分溶齣率為1.79;國外肥料為1.13、1.25,自行研製的肥料的初期溶齣率與微分溶齣率分彆高于國外肥料,但都達到瞭國際標準（初期溶齣率小于15%、微分溶齣率在0.25%～2.5%之間）。同時用土壤淋溶法對自製的2種控效肥和1種進口肥進行瞭N溶齣量的測定,結果錶明：控效肥土壤淋溶齣量與對照比較為顯著,6d內CAF1、CAF5溶齣N總量分彆為對照的33.3%、36.1%,同時將兩種方法所得齣的結果進行瞭綜閤分析,對控效效果作齣初步評價,為作物閤理施肥提供參攷。
채용수침포법대5충포막공효비（불포괄대조）시양적양분용출솔진행료비교측정,측득각충비료적초기용출솔、미분용출솔분별위,자행연제공효CAF1：1.14、1.78;CAF4：1.59、1.84;CAF5：1.37、1.76;국외비료FB：1.01、1.24;FZ：1.24、1.27,자행연제적비료적초기용출솔평균치위1.37,미분용출솔위1.79;국외비료위1.13、1.25,자행연제적비료적초기용출솔여미분용출솔분별고우국외비료,단도체도료국제표준（초기용출솔소우15%、미분용출솔재0.25%～2.5%지간）。동시용토양림용법대자제적2충공효비화1충진구비진행료N용출량적측정,결과표명：공효비토양림용출량여대조비교위현저,6d내CAF1、CAF5용출N총량분별위대조적33.3%、36.1%,동시장량충방법소득출적결과진행료종합분석,대공효효과작출초보평개,위작물합리시비제공삼고。
Five kinds of controlled-release fertilizers （except for the CK）,coated by organic polymer,were used in this study.The soluble properties of fertilizers were tested and compared in water.The preliminary solubility and differential solubility,are respectively：CAF1：1.14,1.78; CAF4：1.59,1.84; CAF5：1.37,1.76; FB：1.01,1.24; FZ：1.24,1.27.Among the five kinds of controlled-release fertilizers,CAF1,CAF4 and CAF5 were prepared by ourselves,while FB and FZ were imported fertilizers.The average of preliminary solubility of CAF1,CAF4 and CAF5 is 1.37,differential solubility is 1.79.However,the average of preliminary solubility is 1.25.Compared with the latter,the preliminary solubility of the former exceeds 0.26,and the differential solubility exceeds 0.54,but they all reach the international standards——-the preliminary solubility less than 15%,differential solubility is 0.25% to 2.5%.Meanwhile,we determinated the quantity of N release of CAF1,CAF5 and FB by soil dissolution rate method.The total quantity of N release in six days of CAF1 was 33.3% of CK,CAF5 was 36.1%.Results were evaluated comprehensively,in order to apprise the adaptability of these five kinds of controlled-release fertilizer to crops.
