有機(jī)肥在油-稻輪作田塊對(duì)油菜生長(zhǎng)和土壤肥力的影響
[Abstract]:The aim of this study was to find out the best application rate of organic fertilizer in rape field when the highest economic yield was obtained by applying organic fertilizer only in the season of rape-rice rotation. This paper provides a theoretical basis for the application of organic fertilizer in vegetable season in the process of soil fertilization with double cropping in the field and the application of organic fertilizer for many years in oilseed season. The experiment was carried out at Jiangtang Agricultural Science Test Station in Jinhua City. The experiment was set up as follows: rape, non-fertilization control treatment (CK); rape, and conventional chemical fertilizer control treatment (CF);. 15 t/hm~2 (T _ 1), 30 t/hm~2 (T _ 2), 45 t/hm~2 (T _ 3), 60 t/hm~2 (T _ 4), 75 t/hm~2 (T _ 5) were applied to rape without fertilization. A total of 7 treatments were performed. The results showed that the economic yield of rape was the highest with 2 300 kg/hm~2, which was 185% higher than that of CK, 11.4% higher than that of CF, and the total absorption of nitrogen, phosphorus and potassium was the highest (87.2 kg/hm~2, 34.7146 kg/hm~2, respectively). It was 224%, 427%, 477% higher than CK, 10.7%, 230% and 175% higher than CF, respectively. Based on the economic yield, the optimum application rate of organic fertilizer was 60 t / hm ~ (2) in rapeseed season. The optimum application rate of organic fertilizer was 60 t 路hm ~ (2) 路h ~ (- 1) 路h ~ (- 1). One year after application of organic fertilizer, soil pH, organic matter, total nitrogen, total phosphorus, total potassium, alkali-hydrolyzed nitrogen, available phosphorus, available potassium and cation exchange capacity all increased in varying degrees. After 60 t / hm ~ 2 of organic fertilizer was used, there was significant difference between each fertilizer value and CK.
【作者單位】: 浙江省農(nóng)業(yè)科學(xué)院環(huán)境資源與土壤肥料研究所;蘭溪市游埠鎮(zhèn)農(nóng)業(yè)技術(shù)推廣站;中國(guó)農(nóng)業(yè)科學(xué)院農(nóng)業(yè)資源與農(nóng)業(yè)區(qū)劃研究所;
【基金】:國(guó)家公益性行業(yè)(農(nóng)業(yè))科研專項(xiàng)(201503122)
【分類號(hào)】:S158;S565.4
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