Thursday, September 15, 2022
Monday, September 12, 2022
Thursday, September 15, 2022
Thursday, September 15, 2022
Thursday, September 15, 2022
问题:在一般情况下,薯类作物的经济系数是()A、20—25%B、30—40%C、60—70%D、70—85%
Monday, September 12, 2022
Tuesday, August 22, 2023
Tuesday, January 10, 2023
Thursday, September 15, 2022
问题:一般而言,水稻产量构成中单位面积穗数、每穗粒数、结实率变化较大,而()相对稳定。
Wednesday, August 16, 2023
Thursday, September 15, 2022
问题:下列属于短日照作物的有()。A、大豆B、马铃薯C、烟草D、荞麦E、甘蔗
Friday, January 26, 2024
Thursday, September 15, 2022
Saturday, October 1, 2022
问题:()是指一年之内在同一土地上种植两季或多季作物的种植方式。A、复种B、复种指数C、间作D、套作
Thursday, September 15, 2022
Thursday, September 15, 2022
Thursday, September 15, 2022
Monday, September 12, 2022
问题:与叶片有关的几个生理指标是()、光合势(LAD)和()。
Thursday, September 15, 2022
Monday, September 12, 2022