Method for increasing yield of double cropping rice by turnover and fertilizer saving of Astragalus sinicus L. and straw in rice field

A technology of Vetch and double-cropping rice, applied in the fields of botanical equipment and methods, application, rice cultivation, etc., can solve the problems of deterioration of physical and chemical properties, decreased fertility, environmental pollution, etc., and achieves the goal of reducing fertilizer input and increasing yield. Effect

Inactive Publication Date: 2014-11-19
CHINA AGRI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Long-term large-scale application of chemical fertilizers leads to soil compaction, deterioration of aggregate structure, decline in fertility, and deterioration of physical and chemical properties
At present, the reasonable utilization rate of straw resources in my country is low, only 20% to 36% are used as feed and fertilizer, and the burned and discarded straw is as high as 45% to 60%.
The phenomenon of crop straw burning is serious, which not only wastes organic fertilizer sources, but also seriously pollutes the environment

Method used

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  • Method for increasing yield of double cropping rice by turnover and fertilizer saving of Astragalus sinicus L. and straw in rice field
  • Method for increasing yield of double cropping rice by turnover and fertilizer saving of Astragalus sinicus L. and straw in rice field
  • Method for increasing yield of double cropping rice by turnover and fertilizer saving of Astragalus sinicus L. and straw in rice field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The return rate of milk vetch is 30000kg / hm 2 In the late rice season, the early rice stalks were fully returned to the field. Under the same nitrogen input conditions, compared with conventional fertilization measures, the nitrogen fertilizer input was reduced by 38.2%, and the early rice grain yield was increased by 6.64%, which had no significant impact on the late rice grain yield. The total yield of rice grains is 1.09%. It shows that the quantity of milk vetch returning to the field is 30000kg / hm 2 Compared with conventional fertilization, returning full amount of early rice straw to the field in the late rice season can save urea input, and at the same time, the yield of late rice is not significantly reduced, and the yield of early rice and the total yield of double-cropping rice have a certain effect.

Embodiment 2

[0028] The return rate of milk vetch is 22500kg / hm 2 In the late rice season, the early rice stalks were returned to the field in full. Under the same nitrogen input conditions, compared with conventional fertilization measures, the nitrogen fertilizer input was reduced by 32.5%, the grain yield of early rice was increased by 9.90%, and the grain yield of late rice was increased by 7.78%. Yield 5.74%. It shows that the quantity of milk vetch returning to the field is 22500kg / hm 2 Compared with conventional fertilization, the full amount of early rice straw returned to the field in the late rice season did not significantly reduce the yield. While saving urea input, the yield of early and late rice seasons and the total yield of double-cropping rice had a certain effect.

Embodiment 3

[0030] The return rate of milk vetch is 15000kg / hm 2 In the late rice season, the early rice stalks were fully returned to the field. Under the same nitrogen input conditions, compared with the conventional fertilization measures, the nitrogen fertilizer input was reduced by 24.5%, the grain yield of early rice increased by 11.55%, and the grain yield of late rice increased by 1.41%. Yield 5.27%. It shows that the quantity of milk vetch returning to the field is 15000kg / hm 2 Compared with conventional fertilization, the full amount of early rice straw returned to the field in the late rice season did not significantly reduce the yield. While saving nitrogen fertilizer input, the yield of early and late rice seasons and the total yield of double-cropping rice had a certain effect.

[0031] Table 1. Experimental treatments and fertilization schemes

[0032]

[0033] Table 2. Effects of different milk vetch and early rice straw returning amounts on double-cropping rice yield...

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Abstract

The invention belongs to the technical field of fertilizer-saving high-yield culture in agricultural production and relates to a method for increasing yield of double cropping rice by turnover and fertilizer saving of Astragalus sinicus L. and straw in a rice field. Specifically, the method includes that during growth of early rice, green Astragalus sinicus L. is overturned and pressed to return to the field so as to replace part of nitrogenous fertilizer, and during growth of late rice, straw of the early rice is returned to the field to replace part of nitrogenous fertilizer, and purposes for nitrogenous fertilizer conservation and high yield are achieved in the integral production cycle of double cropping rice. The method solves the problems that areas of vacant fields in winter are enlarged, the rice field is deteriorated, ecological cost for rice production is increased, and fertilizer utilization rate is seen low and the like in a rice cropping system of southern China. The method is a cultivating technology high in yield, nitrogenous fertilizer saving and lower in N2O emission and provided for increasing yield of the double cropping rice, reducing fertilizer investment and increasing fertilizer utilization rate.

Description

technical field [0001] The invention belongs to the technical field of fertilizer-saving and high-yield cultivation in agricultural production. In particular, it relates to a method for improving the yield of double-cropping rice by using milk vetch and straw returning to the field to save fertilizer. Specifically, during the growth period of early rice, fresh grass of milk vetch is used to replace part of the nitrogen fertilizer, and during the growth of late rice, early rice is used. Replacing part of the nitrogen fertilizer with straw returning to the field can save nitrogen and reduce N in the whole production cycle of double-cropping rice. 2 O high-yield target emissions, increase production targets. Background technique [0002] With the improvement of agricultural intensification, the amount of chemical fertilizers used in farmland has been increasing, while the amount of organic fertilizers has decreased rapidly. Long-term large-scale application of chemical fertil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01D82/00A01G16/00A01G22/22
Inventor 曾昭海李登云许和水胡跃高陈源泉
Owner CHINA AGRI UNIV
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