WANG Gai-ling, HAO Ming-de, XU Ji-guang, Hong Jian-ping. Effect of conservation tillage on wheat yield and soil physicochemical properties in the south of Loess Plateau[J]. Journal of Plant Nutrition and Fertilizers, 2011, 17(3): 539-544. DOI: 10.11674/zwyf.2011.0388
Citation:
WANG Gai-ling, HAO Ming-de, XU Ji-guang, Hong Jian-ping. Effect of conservation tillage on wheat yield and soil physicochemical properties in the south of Loess Plateau[J]. Journal of Plant Nutrition and Fertilizers, 2011, 17(3): 539-544. DOI: 10.11674/zwyf.2011.0388
WANG Gai-ling, HAO Ming-de, XU Ji-guang, Hong Jian-ping. Effect of conservation tillage on wheat yield and soil physicochemical properties in the south of Loess Plateau[J]. Journal of Plant Nutrition and Fertilizers, 2011, 17(3): 539-544. DOI: 10.11674/zwyf.2011.0388
Citation:
WANG Gai-ling, HAO Ming-de, XU Ji-guang, Hong Jian-ping. Effect of conservation tillage on wheat yield and soil physicochemical properties in the south of Loess Plateau[J]. Journal of Plant Nutrition and Fertilizers, 2011, 17(3): 539-544. DOI: 10.11674/zwyf.2011.0388
Effect of conservation tillage on wheat yield and soil physicochemical properties in the south of Loess Plateau
On basis of the longterm conservation tillage experiment located in Yaodu Distract, Linfen City of Shanxi Province from 1992, effects of the conservation tillage on wheat yield of rainfed land, soil physicochemical properties and soil water storage were studied. The results show that compared with traditional cultivation (TC), the average yields of wheat are increased by 192% and 276% in the 11yearno tillage land with stubble incorporating treatment (11y-NTS) and the 15yearno tillage land with stubble incorporating (15y-NTS) respectively, and the yields are increased by 52% and 117% in abundant precipitation year, while the yields are increased by 850% and 976% in dryyear. These results indicate that the effects of the conservation tillage on wheat yield are increased with the decrease of annual precipitation and the prolongation of implementing time; Soil bulk density is decreased, and soil total porosity, soil water content and water storage in the whole soil profile are increased under the conservation tillage. The contents of soil organic matter, alkalihydro N and available K in 0-10 cm soil layer are increased under the conservation tillage as well. However, the conservation tillage is not favor for the increase of available P, the contents of available P are decreased by 68 mg/kg and 63 mg/kg in the treatments of 11y-NTS and 15y-NTS, decreasing 561% and 519%, respectively, thus it is necessary to fertilize P properly.