摘要
Field experiments were carried out to study the effects of plastic film mulching on soil physical characters, including soil temperature, soil moisture content and soil bulk density, and yield and yield components of sweet potato. The results showed that plastic filming mulching increased soil temperature. Considering the soil temperature-increasing effect, the treatments ranked as black plastic film treatment 〉 white plastic film treatment 〉 control. However, with the deepening of soil layer, the warming effect of plastic film mulching was weakened. Black or white plastic film mulching was conducive to low T/R value, especially in the early growth stage of sweet potato. Plastic film mulching significantly improved the storage root yield of sweet potato. In terms of yield-improving effect, the treatments ranked as black plastic film treatment 〉 white plastic film treatment 〉 control. The storage root num- ber per plant showed a downward trend, but the weight of single storage root was increased.
通过大田试验研究了地膜覆盖对土壤物理性状和甘薯产量及其构成因素的影响。结果表明,地膜覆盖可以增加垄内土温,具体为黑膜处理>白膜处理>对照,且随着土层加深,地膜覆盖的增温效应减弱:黑/白膜处理有利于T/R值的降低,尤其在甘薯生长前期:黑/白膜处理可显著增加鲜薯产量,具体为黑膜处理>白膜处理>对照,而单株结薯数则呈下降趋势,但单薯重则有所增加。
基金
Supported by National Sweet Potato Industrial Technology System(CARS-11-C-16)~~
