Effects of Powder Ridge Ploughing on Physic-chemical Properties and Yield of Perennial Rice Field
Three treatments were set up:traditional ploughing(20 cm as control),powder ridge ploughing 35 cm and 50 cm to study the effects of powder ridge ploughing on soil physicochemical properties and yield of perennial rice field.The results showed that the overall trend of nutrient content under different treatments in the same soil depth was as follows:the powder ridge ploughing 35 cm>powder ridge ploughing 50 cm>CK;The pH value and salt content of soil under CK treatment were the highest.Soil bulk weight at the same soil depth tended to decrease with increasing depth of powder ridge ploughing.When the powder ridge ploughing depth was 35 cm,the number of ear of 667 m2 and grains per ear were the highest,which were 8.3%and 36.4%higher than that of control,and 25.8%and 31.3%higher than that of 50 cm treatment,respectively.When the powder ridge ploughing depth was 50 cm,the 1 000-grain weight of rice was 26.7 g,the highest,but the yield was 548.3 kg·667-1·m-2,the lowest.
Powder ridge pioughingBulk weight of soilRiceYield
NETL
NSTL
万方数据
