Triple-cropping cultivation method for double cropping paddy field

Abstract

The invention discloses a triple-cropping cultivation method for a double cropping paddy field. According to the triple-cropping cultivation method, triple cropping of crops in a year is taken as a cycle; the triple-cropping cultivation method comprises: an annual soil crop rotation comprising rotary cultivation of early rice, and free cultivation of late rice and winter crops; an annual rice field paddy-upland rotation with the combination of upland cultivation of winter crops and paddy cultivation of early rice and late rice; and an annual straw crop cultivation method for returning straws of winter crops to field and not returning the late rice straws to field. Through the method, the problems of long-term soil monoculture, continuous cropping in winter space time, straw combustion and heavy metal pollution in the current double cropping paddy field can be avoided; the content of organic matter in the soil is increased, the soil nutrient storing capability is improved, the soil heavy metal Cd pollution is reduced, the farmland ecology environment is protected and the continuous, balanced and safety production of paddy rice is achieved.

Description

technical field

[0001] The invention relates to a three-round cultivation method in a double-cropping paddy field. Background technique

[0002] At present, the soil cultivation method of double-cropping rice fields in southern China is mainly mechanical rotary tillage, followed by traditional animal-drawn plowing, and no-tillage cultivation is still rarely used; while the planting mode of double-cropping rice fields in southern China is mainly winter fallow-double-cropping rice, followed by rapeseed -Double-cropping rice, milk vetch-double-cropping rice and other models; the treatment method of rice straw and winter crop straw in double-cropping paddy fields is mainly incineration, followed by turning over and returning to the field. Long-term plowing and rotary tillage of double-cropping paddy fields requires a lot of human and animal labor and fuel power, which is labor-intensive and time-consuming. The soil structure is damaged, which can easily lead to soil erosion, ser...

Examples

Embodiment 1

[0026] From September 2004 to October 2013, a 9-year long-term positioning test was carried out in the rice field of the Soil and Fertilizer Research Institute of Hunan Province. 4 planting modes of winter fallow-double cropping rice.

[0027] The hybrid rice "Lingliangyou 211" was selected as an early rice variety in 2013. It was sown on March 30, with a seed rate of 2.5kg / mu. At the same time, turn over the winter crop straw and return it to the field, apply 40% compound fertilizer (20-8-12) 30kg as base fertilizer, mix pre-emergent herbicide on April 30, apply urea 7.5kg, potassium fertilizer 5kg , using wet irrigation for water management, using Daoteng, triazophos, imidacloprid, abamectin, rice blastling and other pesticides to control diseases and insect pests twice. The early rice was harvested on July 12.

[0028] The hybrid rice "Fengyuanyou 299" was selected as the late rice variety in 2013. It was sown on June 20 with a seed rate of 2.0kg / mu. Cover the early rice ...

Embodiment 2

[0039] From 2005 to 2013, in Tian'e Village, Huilongpu Town, Ningxiang County, Hunan Province, a long-term positioning study on different tillage methods and rice straw returning in double-cropping rice fields was carried out. 4 treatments: early and late rice double-cropping tillage and rice-straw returning to the field (CTS), morning and late rice double-cropping tillage and straw non-returning (CT), early and late rice double-cropping rotary tillage and straw returning to the field (RTS), repeated 3 times , the community area is 66.7m 2 . Wet irrigation and quantitative fertilization were carried out throughout the experiment. In 2013, the early rice variety was "Xiangzaoxian 45" and the late rice variety was "Xiangwanxian 13". The field management was basically the same as that in Example 1.

[0040] Soil organic matter has a strong function of water and fertilizer retention, and is an important indicator to measure soil fertility. From figure 2 It can be seen that und...

technical field

[0001] The invention relates to a three-round cultivation method in a double-cropping paddy field. Background technique

[0002] At present, the soil cultivation method of double-cropping rice fields in southern China is mainly mechanical rotary tillage, followed by traditional animal-drawn plowing, and no-tillage cultivation is still rarely used; while the planting mode of double-cropping rice fields in southern China is mainly winter fallow-double-cropping rice, followed by rapeseed -Double-cropping rice, milk vetch-double-cropping rice and other models; the treatment method of rice straw and winter crop straw in double-cropping paddy fields is mainly incineration, followed by turning over and returning to the field. Long-term plowing and rotary tillage of double-cropping paddy fields requires a lot of human and animal labor and fuel power, which is labor-intensive and time-consuming. The soil structure is damaged, which can easily lead to soil erosion, ser...

Examples

Embodiment 1

[0026] From September 2004 to October 2013, a 9-year long-term positioning test was carried out in the rice field of the Soil and Fertilizer Research Institute of Hunan Province. 4 planting modes of winter fallow-double cropping rice.

[0027] The hybrid rice "Lingliangyou 211" was selected as an early rice variety in 2013. It was sown on March 30, with a seed rate of 2.5kg / mu. At the same time, turn over the winter crop straw and return it to the field, apply 40% compound fertilizer (20-8-12) 30kg as base fertilizer, mix pre-emergent herbicide on April 30, apply urea 7.5kg, potassium fertilizer 5kg , using wet irrigation for water management, using Daoteng, triazophos, imidacloprid, abamectin, rice blastling and other pesticides to control diseases and insect pests twice. The early rice was harvested on July 12.

[0028] The hybrid rice "Fengyuanyou 299" was selected as the late rice variety in 2013. It was sown on June 20 with a seed rate of 2.0kg / mu. Cover the early rice ...

Embodiment 2

[0039] From 2005 to 2013, in Tian'e Village, Huilongpu Town, Ningxiang County, Hunan Province, a long-term positioning study on different tillage methods and rice straw returning in double-cropping rice fields was carried out. 4 treatments: early and late rice double-cropping tillage and rice-straw returning to the field (CTS), morning and late rice double-cropping tillage and straw non-returning (CT), early and late rice double-cropping rotary tillage and straw returning to the field (RTS), repeated 3 times , the community area is 66.7m 2 . Wet irrigation and quantitative fertilization were carried out throughout the experiment. In 2013, the early rice variety was "Xiangzaoxian 45" and the late rice variety was "Xiangwanxian 13". The field management was basically the same as that in Example 1.

[0040] Soil organic matter has a strong function of water and fertilizer retention, and is an important indicator to measure soil fertility. From figure 2 It can be seen that und...

Images