In the singleplanting alfalfa, Hay yield of alfalfa has negative influence on available K.
而在单播的紫花苜蓿中，紫花苜蓿的干草产量与速效K呈负相关。
2
The selection of single irrigation technique is a complex systematic engineering including many factors such as climate, terrain, soil, crop and planting mode.
灌区单项灌溉技术的筛选是一个涉及气候、地形、土壤、作物和种植方式等众多因素的复杂系统工程。
3
At the same time, at the course of biological protection of the superhighway side slopes making use of herbs to protect side slope is better than single growing and planting shrubs.