有机加工番茄生产转换期土壤肥力变化研究

通过两年的田间小区试验研究了有机加工番茄生产转换期土壤肥力的变化.结果表明:0-20cm土壤,有机肥加轮作能够明显增加土壤中有机质、碱解氮、速效磷、速效钾的含量,对全氮含量影响不明显.以基施75 t/hm2的有机肥,春麦+毛苕子与加工番茄轮作增加土壤中有机质、碱解氮含量较多,分别增加了33.2;和37.5;;以基施45t/hm2的有机肥,黄豆+春箭舌豌豆与加工番茄轮作增加土壤中速效磷、速效钾含量较多,分别增加了45.5;和64.2;.20～40 cm土壤,有机肥加轮作能够明显增加土壤中有机质、全氮、碱解氮、速效磷、速效钾的含量;以基施75t/hm2的有机肥,春麦+毛苕子与加工番茄轮作增加土壤中有机质、全氮、碱解氮、速效磷、速效钾含量较多,分别增加了41.9;、46.2;、76.9;、200.8;和162.2;.

Research on the Change of Soil Fertility in the Conversion Period of Organic Processing Tomato

The change of soil fertility in the conversion period of organic processing tomato was studied through the plot experiments in the field for two years.The results showed that the content of organic matter,available N, available P,available K could be increased after application of organic fertilizer and crop rotation,but there was no significant effect on the content of total N in 0 - 20 cm soil.When the quantity of organic fertilizer was 75 t/hm~2,the content of the organic matter and alkaline hydrolyzale nitrogen in the soil was increased by the rotation system of spring wheat,common vetch and processing tomato.It was inceased by 33.2%and 37.5%separately.When the quantity of organic fertilizer was 45 t/hm~2,the content of soybean and common vetch and processing tomato in the soil was increased by rotation system of available P,availiable K.It inceased 45.5%and 64.2%separately.The content of organic matter,total N,available N,available P,available K could increase after application of organic fertilizer and crop rotation in 20 - 40 cm soil.When the quantity of organic fertilizer was 75 t/hm~2,the content of organic matter,total N,avalable N,available P and availble K was increawed by the rotation system of spring wheat and vetch and the processing tomato.It was inceased by 41.9%,46.2%,76.9%,200.8%and 162.2% separately.