Protective cultivation technique for rice

Abstract

The invention provides a protective cultivation technique for rice, which relates to a planting method for rice. The protective cultivation technique is carried out according to the following steps: preparation of seedling-growing nutrient soil, seed treatment, seeding quantity determination, seeding, management in a germinating stage, management in a first vertical-needle-shaped incomplete leaf growing stage, management in a weaning stage, management in a seedling stage, and management in a grown-up seedling stage; soil preparation; rice seedling transplanting; and management in a shallow water tiller enhancing stage, management in a tiller control stage, management in a booting stage, management in a flowering stage, management in a filling stage, management in a milk-ripe stage and management in a maturation stage. By virtue of the protective cultivation technique for rice provided by the invention, a short period is changed to a long period, and the rice cultivation growth period is 120 days; by virtue of the heat preservation function of the protective cultivation technique, the growth period reaches up to 150 days more, and a long period is changed to double periods; when the protective cultivation technique is used for planting rice in an area with the rice cultivation growth period longer than 150 days, spring rice is planted in advance in spring and the plantation of autumn rice is delayed in autumn so as to realize double cropping in one year, and consequently, the higher and higher yield of the rice is realized; natural disasters in agriculture can be avoided or reduced; meanwhile, the low temperature can be resisted, and the tiller is enhanced; the soil temperature is increased, and the root growth is enhanced; the temperature at night is preserved, the effective accumulative temperature is increased, the chilling damage is prevented, and therefore the heavy crops are realized in consecutive years.

Description

technical field [0001] The invention relates to a rice planting method, in particular to a protected cultivation technique for rice. Background technique [0002] Rice is native to tropical Asia, and after being widely planted in China, it gradually spread to all parts of the world. According to different methods, rice can be divided into indica rice and japonica rice, early rice and middle and late rice, glutinous rice and non-glutinous rice. Paddy rice is called rice or rice after shelling the rice grains. Nearly half of the world's population feeds on rice. In addition to being edible, rice can also be used as industrial raw materials for wine making and sugar refining. Rice husks and rice straws also have many uses. However, with the increase of population, the reduction of arable land and the salinization of land, the food crisis will inevitably appear. In particular, China uses 7% of the world's land to feed 20% of the world's population, but at the cost of consumi...

AI Technical Summary

Problems solved by technology

my country's grain yield has hardly increased significantly, but the amount of chemical fertilizer per mu has increased by nearly 40-50%. The grain produced per kilogram of chemical fertilizer is less than 17-19 kilograms. This production efficiency is declining at a rate of 1 kilogram per year.

Low temperature and chilling injury in early spring is common, causing delayed growth of rice and causing rice to fail to mature normally

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