Tuesday, January 28, 2025
Monday, September 12, 2022
问题:林木采伐木时,伐根高度一般不得大于()以上。A、5厘米B、10厘米C、15厘米D、20厘米...
Sunday, March 2, 2025
Tuesday, March 4, 2025
Saturday, June 21, 2025
问题:森林区划是对大地域(县以上),中长期和长期的林业生产,经营管理等...
Monday, September 12, 2022
问题:用材林抚育采伐起始期的确定,林分郁闭度达到()以上,应及时进行首次采伐。A、0.6B、0.7C、0.8D、0.9...
Sunday, March 2, 2025
Tuesday, January 28, 2025
Wednesday, April 9, 2025
问题:以下不属于林地的是()。A、耕地B、苗圃地C、疏林地D、灌木林地...
Thursday, November 28, 2024
问题:数量成熟是指林分蓄积或材积平均生长量达到最大时的状态。当到达数量成熟龄时,平均生长量和连年生长量()...
Tuesday, January 28, 2025
Monday, September 12, 2022
问题:补充主伐是按各经营类型可以进行采伐利用的疏林、散生木和母树,分别计算其采伐量。...
Sunday, February 12, 2023
Sunday, February 12, 2023
问题:当W(价值连年生长率)P(利率),森林未成熟,继续经营盈利。...
Wednesday, April 9, 2025
Thursday, January 9, 2025
问题:试述森林资源在我国经济发展和生态环境建设中的作用和效益?...
Wednesday, April 9, 2025
Friday, September 16, 2022
Wednesday, September 14, 2022
Tuesday, June 3, 2025