农业科学

• 休闲

  When planting maize,nitrate N residue in the 0-200 cm soil was 78 kg. ha-1,being 89 kg. ha-1 less than that under fallowing.

  种植作物时0～200cm土层的硝态氮残留量为78kg.ha-1,比休闲时减少89kg.ha-1,且硝态氮主要分布在60cm以上的土层。

• 休茬

  The pot experiment was carried out to study the effects of crop rotation of several vegetable crops with cucumber and fallowing on continuous cucumber cropping soil in solar greenhouse.

  通过盆栽试验,研究了大葱、豇豆、番茄、糯玉米4种作物与黄瓜轮作及常规休茬处理对日光温室黄瓜连作土壤的改良效果。