不同耕作处理对白浆土养分状况及农作物产量的影响

The Effect of Different Cultivating on Nutrient and Crop Yield in Albic Soils

研究表明,长期不同耕作处理对白浆土中养分影响不同。总的规律是:免耕比深松、普翻更利于有机质、全磷的积累和减缓全氮的下降。在对土壤中养分的有效化方面,免耕不如深松和普翻处理。三种耕作处理小区中,玉米、小麦、大豆产量均以免耕最低,玉米和小麦产量深松高于普翻。

The results show that the effect of different cultivating on nutrient in albic soils is different. It is that no-ploughing is more advantageous to accumulate organic matter and total P than subsoiling and ploughing, and to reduce descent of total N. No-ploughing is inferior to promote effectiveness of nutrient in soils than subsoiling and ploughing. In three cultivating, the lowest average yield of maize, wheat and soybean is no-ploughing. Yield of maize and wheat in subsoiling is higher than in ploughing.