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蔬菜种植过程中,菜农常用轮作倒茬的措施克服连作障碍,减少病害的发生。在给蔬菜安排轮作倒茬时应遵循以下4项原则:1.根据蔬菜对养分需求的不同原则安排茬口把需氮肥较多的叶菜类、需磷肥较多的茄果类和需钾肥较多的根茎类蔬菜相互轮作倒茬,把深根类的豆类、茄果类同浅根类的白菜、甘蓝、黄瓜、葱蒜类蔬菜进行轮换倒茬,这样可使土壤不同层次中的养分都得到充分利用。一般需氮肥较多的叶菜类蔬菜后茬最好安排需磷肥较多的茄果类蔬菜。
Vegetable cultivation process, vegetable farmers commonly used crop rotation method to overcome continuous cropping obstacles to reduce the occurrence of diseases. The following four principles should be followed in arranging rotation of vegetables: 1. According to the different principles of vegetable nutrient requirements, we need to arrange more leafy vegetables that require more nitrogen fertilizer, more solanums that need more phosphate fertilizer and more potassium fertilizer Root vegetables rotate each other, the deep-rooted beans, solanaceae with shallow root cabbage, cabbage, cucumber, onion and garlic on the rotation of the crop, so that different levels of soil nutrients are fully utilized. Nitrogen fertilizer is generally required more leafy vegetables after the arrangement of phosphorus fertilizer more needy vegetables.