不同秸秆用量对保护地黄瓜产量及土壤养分的影响

Effect of Different Straw Reapplication on Yields of Cucumber and Soil Fertility

采用保护地田间试验的方法,以"新泰密刺"黄瓜为试材,研究不同秸秆用量直接还田对黄瓜的产量及土壤养分的影响。结果表明:不同秸秆用量还田对黄瓜具有不同程度的增产作用,其中以秸秆施用量为5 000 kg/667 m2最显著,比化肥处理增产15.3%,其次是秸秆施用量为4 0003、000 kg/667m2,分别比化肥对照增产8.43%、7.7%;不同秸秆用量可不同程度提高土壤有机质含量,增加全效N、P、K、土壤速效养分含量,其中尤以秸秆施用量为4 000 kg/667 m2处理的效果明显。

Took protected field cucumber as test crop,effect of different straw reapplication on cucumber yield and soil fertility were studied in pot experiment.The results showed that the straw reapplication may increase the yields of cucumber,of which the straw application of 5 000 kg/667m2 was of the most significant increase of 15.3% compared with the treatment of chemical fertilizer,followed by straw application of 4 000,3 000 kg/667m2 compared to the treatment of chemical fertilizer,respectively,yield 8.43%,7.7%.Straw reapplication can improve in different levels the amount of soil organic matter,increased the total N,P,K,and keep the balance of the content of soil available P and available K,in particular in the straw application was 4 000 kg/667m2 treatment effect was obvious.