double cropping system meaning in Chinese
两熟制
Examples
- Wm in no - tillage corn in wheat - corn double cropping system in north china
免耕制度中的杂草动态 - Jin et al . ( 1990 ) has used this systematic approach successfully in guiding maximum yield research in wheat - corn double cropping systems
金继运等人1990年用该方法成功地指导了小麦-玉米一年两熟种植制度的最高产量研究。 - Wheat - maize rotation is one of the major double cropping systems , taking an important place in grain production in shandong province , about 2 . 36 million ha accounting for 54 . 5 % of the total cultivated acreage , producing 21 . 7 million tonnes grain , 57 . 9 % of the total in 1990
小麦-玉米轮作是主要一年两作制之一，在山东省粮食生产中起重要作用，大约236万公顷，占总耕地面积的54 . 5 % ，生产2170万吨粮食，为1990年粮食总产的57 . 9 % 。 - Some demonstration and extension work based on existing scientific results have been done such as developing grain in large area of land using comprehensive cultivation measures in zibo city in 1987 and research on response of highly yielding crops to potassium and proper distribution of potash fertilizers in double cropping systems supported by ppic in 1990
已根据现有科技成果作出一些示范推广工作，如1987年在淄博市用综合栽培措施在大面积土地上开发粮食生产，以及1990年在ppic资助下研究一年两作制下高产作物对钾的反应和钾肥合理分配。 - Referring to the achievements of conservation tillage on dry land farming , there is a series of work to be done to develop new tillage techniques to adapt to double cropping system of wheat and maize in shandong province . such work includes controlling the combine traveling along the line , return the stalk to the field after chopped , subsoiling being done in maize ' s growing stage . the advantage of subsoiling is to make the soil inter placed with soft and hard strips , which is good for decreasing runoff and vaporizing , and retaining rain
1 、保护性耕作条件下，普通小麦条播机的播种质量较差，小麦的田间出苗率比传统耕作低9 . 3 ；保护性耕作小麦冬前地上部分的生长状况也较传统耕作小麦差；由于根系的生长条件较为优越，保护性耕作的小麦的根系生长旺盛、分布广，越冬后有利于小麦的地上部分生长，大量发生春季分蘖和次生根，幼穗强烈分化，表现出较传统耕作小麦强的生长优势，产量提高6左右。