其次，他们设计的窄条三圃田农耕制延用至18世纪。
Secondly, they devised the narrow-strip, three-field farming system which continued to the 18th century.
利用海陆杂交技术所选育的长绒棉抗病材料在枯萎病病圃、重病田等抗病性鉴定，都表现很好的抗病性。
The resistance to Fusarium wilt of long-fibre cotton selected from sea-land hybrid was appraised by using sea-land hybrid techniques.
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