Fertilization method for improving resistant starch content in rice

Abstract

The invention discloses a fertilization method for improving the resistant starch content in rice. The method comprises the following steps of 1, applying N, P and K organic fertilizers into a seedling culture land at the dose of 1500 to 1550 kg per mu of seedling field; 2, only applying N fertilizers and not applying P and K fertilizers in the whole growth period after the transplantation; 3, 1 to 2 weeks after the transplantation, 4.5 kg to 5 kg of urea is applied in per mu of land; 3 to 4 weeks after the transplantation, 4.5 kg to 5 kg of urea is applied in per mu of land; before 4th leaf from top to 5th leaf from top ages, the corresponding earing fertilizers are applied. The application of the corresponding earing fertilizers refers to the application of 2 to 3 kg of urea, 5 to 6 kg of high concentration potassium sulfate compound fertilizers and 13 to 15 kg of K fertilizers per mu of land. In the rice planted by the fertilization method for improving the resistant starch contentin rice, the content of resistance starch is 2.12 percent; the content of the resistance starch in rice using a common fertilization method is only 0.83 percent. The fertilization method has the advantage that the resistance starch content in the rice is obviously improved.

Description

technical field [0001] The invention relates to the technical field of pesticide and chemical fertilizer agricultural planting, in particular to a fertilization method for increasing the content of resistant starch in rice. Background technique [0002] Rice is a kind of herbaceous Oryza genus, which belongs to cereals, and it is also the most important and oldest kind of food in Oryza genus, which is different from upland rice. Native to China and India, rice was grown in the Yangtze River Basin in China 7,000 years ago. [0003] Rice is divided into indica rice and japonica rice, early rice and mid-late rice according to rice type, glutinous rice and non-glutinous rice. There are other classifications, which are divided into paddy field rice and floating rice according to whether it is cultivated without soil; divided into seasonal rice and "lazy rice" (regenerated rice) according to the life cycle; divided into ordinary rice and giant rice of about 2 meters according to ...

AI Technical Summary

Problems solved by technology

However, there is still little research on the impact of environmental factors (such as cultivation techniques, nitrogen fertilizer dosage, etc.) on rice production on its resistant starch.