Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2014, Vol. 30 ›› Issue (9): 133-136.doi: 10.11924/j.issn.1000-6850.2013-1975

Special Issue: 玉米

• 23 • Previous Articles     Next Articles

Study of Characteristic of Nutrient Releasing of Maize Straw with Two Tillage Methods

  

  • Received:2013-07-18 Revised:2013-08-16 Online:2014-03-25 Published:2014-03-25

Abstract: For exploring the rule of decompose rate of maize straw with two farming modes, the article studied dry-matter consuming, characteristic of nutrient releasing (N, P, K and organic matter) and the dynamic change rule of C/N rate of maize straw with two farming modes (rotary tillage and deep tillage) in land for growing field crops by method of nylon net bag. The result showed that: one month after maize straw turned over was the rapid decompose period, when N, P, K and C could release rapidly in short time, and the period, the lose rate of each nutrient were 74.6%, 39.3%, 78.5%, 50.2% and 71.8%, 34.1%, 66.5%, 42.9% with the two farming modes. The farming mode of deep tillage + straw turnover was beneficial to the rapid decompose of the maize straw, but had no effect on the final amount of the maize straw nutrient releasing. As the time goes on, the surplus of the crop straw nutrient under the two tillage methods tended to no difference.