Method for increasing tiller of rice to improve yield by using lime nitrogen and use of lime nitrogen

Abstract

The invention discloses a method for increasing the tiller of rice to improve the yield by using lime nitrogen and the use of the lime nitrogen. The lime nitrogen is prepared from the following ingredients by mass percent: 1% to 3% of silica, 11% to 15% of free carbon, 1% to 3% of aluminum oxide, 0.2% to 1.0% of ferric oxide, 21% to 27% of free calcium oxide, 0.3% to 1.0% of magnesium oxide, 50% to 63% of calcium cyanamide and 0.1% to 0.3% of calcium carbide. In the land preparation, the lime nitrogen is spread at a rate of 10 to 15 kg / mu, rotary tillage is carried out, compound fertilizer is spread at a rate of 25 to 30 kg / mu, manual ploughing and racking are carried out, and even sowing is carried out; topdressing is carried out after 5 to 15 days at a rate of 5 to 10 kg / mu. According to the invention, the lime nitrogen is applied for concentrated seedling so as to obviously promote the root development of the seedling, control the plant height of the seedling, promote the tillering of the seedling, increase the number of tillers of a single plant, increase the basic seedling number of the transplanting, control the overage overgrowth, reduce the basic seedling damage caused by the plant height, and improve the rice yield. According to the invention, the lime nitrogen has the function of controlling soil pests, controls and removes cyanobacteria, and improves the agricultural ecology and working environment; the lime nitrogen can obviously improve the economic traits of rice, and the economic benefit is extremely remarkable.

Description

technical field [0001] The invention relates to the field of agriculture, in particular to a method and application for increasing rice tillering and yield with lime nitrogen. Background technique [0002] Rice (scientific name: Oryza sativa) is a kind of herbaceous Oryza sativa, and it is also the most important and longest food in Oryza genus. It is also called Asian cultivated rice, and it can be said to be rice in simple terms. It is an annual, gramineous plant, monocotyledonous, sexually warm and humid, about 1 to 1.8 meters high when mature, with slender leaves, about 50 to 100 cm long and 2 to 2.5 cm wide. The flowers of rice are very small. When blooming, the main flowering branches will be arched, and small flowers will bloom between 30 and 50 cm below the branches. Most of them are self-pollinating and set seeds, which are called rice spikes. Generally, the size of the rice ear is 5 to 12 mm long and 2 to 3 mm thick. [0003] Improving the yield per unit area of ...

AI Technical Summary

Problems solved by technology

[0003] Improving the yield per unit area of ​​rice is still one of the major issues that humans need to solve today, but the current technology is limited to the cultivation of excellent varieties, which include hybrid rice sterile lines and maintainer lines, respectively. To achieve high yield, the genetic technology research of rice is still at the primary stage (hybrid rice refers to the selection of two rice varieties that have certain differences in genetics and can complement each other in their excellent traits, and carry out hybridization to produce the first hybrid with heterosis. first generation hybrids, for production)

And after the seedling of existing hybrid rice is transplanted to paddy field, generally only can effectively tiller go out 10-12 tiller, and the seedling of hybrid rice of a few high yields can effectively tiller go out 12-15 tiller at most after transplanting to paddy field.

The fertilizers and methods used in the existing rice planting methods are not conducive to the robust growth of multiple tillers and tillers

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