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According to the determination of the soil moisture meter, it was found that the damage to the growth of mandarin trees in the mandarin garden due to the presence of soil moisture is rarely commensurate with the situation. Therefore, the water status of the litter after the rain is not emphasized, and the general situation is heavy. Select sampling in the first half or five days after the weather conditions in early or mid-day weather conditions, each of which is closely related to the main root. For two soil layers of 10 and 20 to 40 centimeters, where the roots reach the sampling location, the water content of the six soils at the right side is determined first, and then the average value is taken. The measured materials are discussed later.
The relationship between growth and soil water content in different ages of citrus: According to the changes of citrus growth in each year and the results of determination of soil moisture content and the determination of soil water holding capacity, the growth and litter moisture content of mandarin canopies with different ages can be determined. In a close relationship, the 195-year-old second-year tree still grows normally when the soil moisture content is low in this period, but in the winter of 1929, the fourth-instar tree did not grow well.
The soil water content is positively correlated with rainfall. From October to January next year, the water content in the soil is less, and there is also little exchange of simple rainfall during this period. For example, the total precipitation from October 19-8 to January 1959 Only 21.1 mm, the soil moisture content is often in: a 10% of the Jane; on the contrary, every year from February to September is the period of rainy ginseng, litter moisture content of 17.1 to 24% of the Jane. It can be seen that how to preserve the rainfall from Jan. to Sept. Jane and increase soil moisture in winter to avoid drought is an important issue.
According to the test results of the soil moisture meter, it is necessary to take reasonable measures to maintain the soil moisture in the citrus orchard, and maintain the soil moisture content at 40% or more, so as to ensure the normal growth of the citrus tree. Reasonable coverage, timely shallow loose soil, good preparation for deep tillage before the onset of the dry season, and other measures to ensure a bumper harvest in the citrus grove.
Application of Soil Moisture Meter to Soil Moisture Conservation in Citrus Orchards
Cultivation of citrus in Guangdong is very common, but large-scale cultivation also has certain problems. First of all, there is little rainfall in winter and soil drying limits the development of citrus. It is a very important link in the citrus cultivation area to do a good job of soil and water conservation. In order to solve the problem of soil moisture in citrus orchards, it is necessary to perform an effective measurement and analysis of the soil moisture. A soil moisture measuring instrument can be used to determine soil moisture in citrus orchards.
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