A.秋季繁殖B.春繁C.高海拔繁殖D.冷灌繁殖
A.6-8時(shí)B.8-10時(shí)C.10-12時(shí)D.12-14時(shí)
A.N肥延遲施用親本抽穗揚(yáng)花B.N肥提早施用親本抽穗揚(yáng)花C.P肥延遲施用親本抽穗揚(yáng)花D.K肥延遲施用親本抽穗揚(yáng)花