提倡种植棉、桑、麻等经济作物，免除他们三年的赋税。
He advocated the planting of cash crops such as cotton, mulberries and hemp, offering tax exemptions as an incentive.
研究了PAE用量、热固化时间和温度对麻浆、桑皮浆和针叶木化学浆手抄薄型纸湿强度特性的影响。
The wet-strength properties of three thin handsheets made of hemp pulp, softwood pulp and mulberry pulp with the wet-strength resin (PAE) as the additive were studied.
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