通过人工有性杂交、单株选择、系统选择、区试鉴定，育成早生中熟桑树新品种农桑12号、农桑14号。

The early sprouting and mid maturing new mulberry varieties Nongsang 12 and Nongsang 14 were bred through hybridization, single plant selection, pedigree selection and regional test.

凡农桑歉收之年，于冬季选祭地，次年农历二月吉日搭祭台，供祭品祭众神。

Where Nongsang harvest year, in winter Jide election the following year auspicious Lunar New year in February take the altar for the sacrifice festival gods.

大约1210年编撰的《农桑辑要》或《农业和养蚕业的基本原理》有着丰富的图片和说明，而且许多和丝绸有关。

The Nung Sang Chi Yao, or Fundamentals of Agriculture and Sericulture, compiled around 1210, is rich with pictures and descriptions, many pertaining to silk. [25]