rice wheat cropping 中文意思是什麼

rice wheat cropping 解釋
稻麥輪作
  • rice : n 賴斯〈姓氏〉。n 稻，水稻；米；米飯。 a rice seeding bed 秧田。 broken rice 碎米。 cargo rice 糙...
  • wheat : n. 1. 【植物；植物學】小麥。2. 〈美俚〉生手；老實人[青年]；鄉下人。
  • cropping : 裁邊
  1. Based on the previous screenhouse study and field experiment, fertilization, plant variety and plant density were studied on two selected cropping systems : rape - rice - rice and wheat - rice, using an orthogonality design

    在過去網室研究和大田試驗的基礎上，在油菜-水稻-水稻和小麥-水稻兩種供試種植制度上研究了施肥、作物品種和種植密度，採用正交設計。
  2. Main results are generalized as follows : in dry year, coupling fitness of water requirement to rainfall reaches 90 % for sorghum and spring millet during crop ' s growth and reproductive season in shunyi county, while 85 % for peanut and soybean, 70 % for spring com and cotton, 65 % for alfalfa, and 55 % for cropping pattern of rice followed by wheat

    主要結論包括： 1 ）順義區乾旱年型下，高粱和春谷全生育期需水與降水的耦合度達到90 ；花生和春大豆其次，達到85 ；春玉米和棉花為70 ；苜蓿65 ；水稻和冬小麥?夏作物組合耦合度只有55 。需水量和灌溉定額則與耦合度大小相反。
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