Minimal-tillage mechanical transplanting method for late rice in double-cropping rice field

Abstract

The invention belongs to the technical field of double-cropping rice and particularly relates to a minimal-tillage mechanical transplanting method for late rice in a double-cropping rice field. According to the method, late rice is sown in time; early rice is harvested in time; minimal tillage and stubble cleaning are conducted on the late rice, only one time of rotary tillage is conducted on thewhole field, and rice stubbles and straw are spirally put into surface soil; the late rice of the right age is transplanted mechanically and planted reasonably densely; the late rice is irrigated after mechanical transplanting. According to the method, by means of minimal tillage, namely rotary tillage is carried out once in the whole field, rice stubbles can be spirally put into the soil withoutslurry stirring, stubble cleaning is achieved, ratooning rice is decreased, the canopy group quality is improved, and rice quality is improved; slurry sinking is not needed, bag leakage is reduced, accordingly seasonal contradiction of double-cropping rice is relieved, and mechanical transplanting quality is improved; the use frequency of herbicides is reduced, green development is promoted, the rice quality of the mechanically transplanted late rice is guaranteed, the farming cost is saved, the cost is saved, the efficiency is improved, and the method has the important significance for promoting the development of resource-saving and environment-friendly rice farming technologies and achieving the quality improvement and the efficiency improvement.

Description

technical field [0001] The invention belongs to the technical field of double-cropping rice, and in particular relates to a method for mechanically inserting late rice in a double-cropping paddy field with less tillage. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: [0003] Under the multiple backgrounds of tight double-cropping rice production seasons, rising farming and labor costs, early rice straw burning, late rice no-tillage and seedling throwing have developed rapidly due to the advantages of cost savings, high efficiency, and high yield. Taking Hunan as an example, according to the preliminary survey results, In 2016, the area of ​​no-tillage and throwing of late rice in Hunan reached about 1.15 million mu. Compared with rotary tillage and throwing of late rice, no-tillage and throwing of late rice can save about 120 yuan in farming costs per mu, and no-tillage machine transplanting of late rice can ...

AI Technical Summary

Problems solved by technology

[0006] (1) In the existing technology, with the prohibition of straw burning and the further increase of labor costs, the traditional late rice no-tillage and throwing of seedlings has prominent problems such as frequent regeneration of rice, poor rice quality, and low efficiency of throwing seedlings.

[0007] (2) In the prior art, the no-tillage machine is easy to insert the seedlings on the rice stubble or straw on the basis of the frequent occurrence of ratooning rice, and it is easy to be sunburned to death, or the root system is difficult to contact the soil, resulting in slow greening and seedling growth. Seriously restricted the development of late rice no-tillage technology

[0008] (3) After traditional plowing or multiple rotary tillage operations, the surface mud is suspended in the water. In order to ensure the quality of the machine transplanting, the mud must be sunken, otherwise the seedlings are easily filled with mud and cause leakage, especially on the front and rear machine inserting compartments. Delayed seedling transplanting date caused by slurry sinking, and shortening seedling age by delaying sowing date will increase the risk of cold dew wind in the later stage, which is not conducive to the safe production of late rice

[0009] (4) In the prior art, due to the return of the early rice straw to the field, a part of the rice stubble in the no-tillage paddy field is covered by the straw, and the regenerated seedlings survive due to the protection of the straw from the herbicide. Or transplanted by machine, the regenerated seedlings grow rapidly, and the plant height is significantly higher than that of the late rice, which seriously affects the light energy utilization of the leaves of the late rice, reduces the tillering and dry matter accumulation of the late rice, and leads to a decrease in yield; at the same time, the appearance quality and cooking quality of the regenerated rice of the early rice are average. Worse than late rice, it will seriously affect the rice quality of late rice after being mixed with late rice

Images