断根对作物地上、地下部生长状况及产量的影响与断根时间、程度直接相关。
The effect of rootcutting on aboveground growth, underground growth and yield of crop was directly related with the time and degree of rootcutting.
农业生物学；土壤生物学关于植物养分和与土壤条件相关的生长的研究，尤其是对判定如何增加农作物产量方法的研究。
The study of plant nutrition and growth as related to soil condition, especially to determine ways to increase crop yield .
沼液和沼渣是新型环保优质肥料，其中含有较全面的养分和丰富的有机质，可促进农作物生长和提高其产量与品质。
Biogas slurry and biogas residues are new type of green fertilizers with comprehensive nutrition and abundant organic matter, which can promote the growth and improve the yield and quality of crop.
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