By extending the plantinghole and improving the soil, soil is humificated from root around to all orchard and then these are the base for increasing the orange quality and tree vigor.
The results showed that, mulched holeplanting could improve soil temperature, conserve soil moisture, and promote full release and efficient use of soil rapidly available nutrients.
结果表明，覆膜穴播可以提高土壤地温，保持土壤水分，促进土壤速效养分的充分释放和有效利用。
3
The results of preliminary analysis to the experiment data showed that there was rather close correlation between size of plantinghole and parent rocks and soil textures.