Abstract:

The application of early straw returning and later rice simplified cultivation techniques are the most important measure both in the current development of new farming systems and quality and efficient agriculture. In this study, the three cultivation patterns (handmade transplanting, mechanical interpolation and scattered transplanted) of later rice were comparative studied. The results showed that the method of handmade transplanting got the highest yield, but only a little bit higher than the mechanical interpolation, while scattered transplanted got much lower yield. Compared to handmade transplanting treatment, the dry matter accumulation of mechanical interpolation was similar in heading stage, maturity stage and heading-maturity stage; and the dry matter accumulation of handmade transplanting and mechanical interpolation was significantly higher than the scattered transplanted in heading-maturity stage. The effective tillers of three cultivation patterns were reduced in straw returning, especially scattered transplanted. In addition, compared with the handmade transplanting and scattered transplanted, the mechanical interpolation significantly saved more time and money. On the whole, in early straw returning conditions, mechanical interpolation expresses high and stable yield. Therefore, the mechanical interpolation is worthy of planting in Zhejiang Province, and it has broad application prospects.