主要绿肥根冠比的初步研究

Preliminary study on root-crown ratio of main green manure

绿肥在提供植物养分、保水保肥、改善土壤构造、提供牧草饲料、保障粮食安全、降低能源消耗和提高农业生态环境质量等方面发挥着重要作用。这对我国传统农业的发展具有重要意义。根冠比对于植物来说,意义重大。当根系对于营养物质的吸收大于地上部分的消耗时,地上部分的生长将得到增强;反之亦然,因此通过周期性地调控,就能促进植物的持续生长。本文通过文献研究法,收集各种绿肥的根冠比,得出了草木樨和绿豆及苜蓿适合保土,苕子适合覆盖土壤的结论,为减少水土流失,改善农业生态环境,保障粮食安全,促进农业生产的可持续发展提供了依据。

The green manure plays an important role in providing plant nutrients,retaining water and fertilizer,improving soil structure,providing forage,ensuring food security,reducing energy consumption and improving the quality of agricultural ecological environment. This has important sense to the development of our country traditional agriculture. Root - cap ratio is very important for plants. When the absorption of nutrients by root system is greater than the consumption of aboveground part,the growth of aboveground part will be enhanced. The reverse is also true,therefore,through periodic regulation,can promote the continuous growth of plants. In this paper,through literature research,the root and crown ratio of all kinds of green manure was collected,and it was concluded that sweet clover,mung bean and alfalfa were suitable for soil conservation. Is suitable for the Chinese trumpet creeper,covered in order to reduce soil and water loss,and improve agricultural ecological environment,safeguard food security and promote the sustainable development of agricultural production to provide the basis.