总耕地面积 meaning in Chinese

total area under cultivation

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 % 。
Under the situation of total irrigation water use decreasing greatly and it is essential to irrigate saline soil ( saline soil and salt soil area constitutes 65 % of the whole infield ) , a saving irrigation experiment study was carried out in hetao irrigation area , and crop response to water and salt stress was studied by way of pot and field experiment
本文在河套灌区总灌水量减少又要解决盐渍化土地（占总耕地面积65 % ）灌溉问题的前提下，针对主要作物油葵，采用苗期盆栽和田间试验相结合的方法进行作物水盐胁迫响应研究。