Sample collecting method and sample collecting device for determining utilization distribution of potassium in rice field

Abstract

The invention relates to a sample collecting method and a sample collecting device for determining the utilization distribution of potassium in rice field. The steps of building a rice planting pond, transporting rice soil, filling the pond, planting the rice and the like are carried out, and runoff water, leakage water, plant and soil samples can be collected and are used for detection as required. According to the sample collecting device for determining the utilization distribution of potassium in rice field, a laminate is arranged in the middle of a support to divide the support into an upper layer and a lower layer, a waterproof layer is arranged at the inner side of the upper layer to form a leakage pool, partition plates are arranged in the leakage pool to divide the leakage pool into multiple testing areas with the same size, and at least three test barrels are arranged in each testing area. According to the sample collecting method and the sample collecting device, an isotope labeling method is adopted to collect potassium distribution samples in plant absorption, leakage and runoff for detection, scientific data is provided for reasonable utilization of the potassium fertilizer for rice, and the sample collecting method and the sample collecting device have important significances on promotion of optimal application of the potassium fertilizer in rice planting, reduction of loss, improvement of the utilization efficiency and the income of farmers, acceleration of the construction of socialism new countrysides and ecological civilization construction and the like.

Description

technical field [0001] The invention relates to a sample collection method and device for determining the whereabouts of potassium in paddy fields. Background technique [0002] Potassium is one of the three essential nutrients for rice growth. It is an activator of more than 60 enzymes in crops and has a significant regulatory effect on crop C and N metabolism. Potassium application can also improve soil fertility and increase rice yield. important to quality. However, my country is a country that is relatively deficient in potassium fertilizer resources. In recent years, due to the increase of crop yield and multiple cropping index, the potassium taken away from the farmland by crops is much higher than the input. The shortage of potassium in farmland has become a constraint on my country's agricultural production and farmers The main problem of increasing income. In the past two decades, a large number of research and production practices have shown that the insufficient...

AI Technical Summary

Problems solved by technology

In previous studies, potassium fertilizers, especially the whereabouts of different types of potassium fertilizers after being applied to the soil, were neglected, or the transformation, whereabouts, and loss pathways of fertilizer potassium in the crop-soil-environment system were not systematic enough, resulting in the whereabouts of potassium nutrients in rice planting. question is not clear

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