与焚烧麦茬相比,保留麦茬可降低种子播处的地温,减少植株中下部的光合有效辐射。保留麦茬播种的小麦主茎叶片生长速度迟缓,其分蘖数减少与分蘖后期地上部干物质重量的减少尤为明显,最终收获时植株也较矮。然而,由于自开花至成熟期间的生长条件十分有利,早期生长发育受保留麦茬播种影响的植株,最终籽粒与秸秆产量损失较小。 Compared with burning stubble, keeping stubble can reduce the temperature of sowing seeds and reduce the photosynthetically active radiation in the lower part of the plant. The main stems of wheat planted with retention stubble grew slowly, the decrease of tiller number and the weight of dry matter in shoots at the late tillering stage were more obvious, and the plants were harvested at the final harvest. However, since the growth conditions from flowering to maturity are very favorable, early growth and development are affected by the plants affected by the retention of stubble, resulting in less loss of final kernels and straw.