翻压春油菜对土壤腐殖质组分的影响

Effects of Spring Brassica L. Rolling on Soil Humus Components

为了筛选出适合华北地区种植的油菜绿肥,采用大田小区试验,在种植夏玉米之前,种植九种不同春油菜品种并翻压,通过对腐殖质组分、热水溶性有机质的测定,探讨春油菜翻压后对土壤有机质组分的影响。试验结果表明,不同春油菜生物量以‘中油肥1901’最高,‘中油肥1904’的植株含碳量最高(69.51 g/kg),‘中油肥1901’次之(65.06 g/kg),春油菜总碳量以‘中油肥1901’最高(466.25 kg/hm2);春油菜翻压均可显著提高土壤腐殖质组分的含量、热水溶性有机质和碳库管理指数,胡敏酸和胡敏素以‘中油肥1901’增加最多;富里酸则以‘中油肥1804’增加最多;土壤热水溶性有机质以‘中油肥1907’增加最多,其次是‘中油肥1901’;土壤碳库管理指数增加较多的是‘中油肥1901’和‘中油肥1907’。该结果为本地农业生产中合理种植油菜绿肥、改善土壤肥料提供一定的理论依据。

In order to select green manure suitable for in North China, using a field experiment, before planting summer corn, nine different Brassica L. varieties were planted and pressed. Through the determination of humus components and hot water-soluble organic matter, the effects of Brassica L. on soil organic matter components were discussed. The test results showed that ’Zhongyoufei1901’ had the highest biomass of different Brassica L.,’Zhongyoufei1904’ had the highest plant carbon content(69.51 g/kg), followed by ’Zhongyoufei1901’(65.06 g/kg).The total carbon content of spring Brassica L. was ’Zhongyoufei1901’ is the highest(466.25 kg/hm^(2)). Brassica L.can significantly increase the content of hot water-soluble organic matter, humus components and the carbon pool management index. Humic acid and humin were the largest increase in ’Zhongyoufei1901’;and fulvic acid increased the most with ’Zhongyoufei1804’;’Zhongyoufei 1907’ increased the most in hot water-soluble organic matter, followed by ’Zhongyoufei1901’;and the soil carbon pool management index increased more in ’Zhongyoufei1901’ and ’Zhongyoufei1907’. The results provide a theoretical basis for rational cultivation of Brassica L.green manure and improvement of soil fertilizer in local agricultural production.