The adaptability of dianthus is very strong, the yield is also very high and its use and benefit are very large. It has a very wide distribution in Fujian Province. To ensure the high yield and quality of bamboo, it is necessary to make full use of the leaf area and make rational use of light energy. Studying the leaf area index of Dianthus can provide a theoretical basis for the rational cultivation of Dianthus chinensis and the cultivation of high-yield forest. The leaf area of ​​dianthus can be measured using a leaf area tester. The soil of the selected test site is red earth, with mild climate, abundant rainfall, annual average temperature of 1812e, average monthly temperature of 9e, extreme low temperature of -9e, active accumulated temperature of 5382e, frost-free period 281d, annual rainfall 1966mm.
In dianthus, the dianthus is 014~4cm in diameter, 1 step in every 015cm, 3 standard bamboos in each diameter order, all the leaves are taken after felling, and the leaves taken from each standard bamboo Use a plastic bag to fasten the bag and measure it as soon as possible. In this test, the leaf area was measured using the paper-cut weighing method. That is, each piece of bamboo is drawn on squared paper with standard square paper and the paper die is cut to weigh its weight, and then the relationship between the weight and the area is proportional to: leaf area = whole area @ cut off the piece of paper The weight of the whole/heavy paper is the final average of the area of ​​the three standard bamboo leaves. Leaf area detectors can also be used for detection, which is more convenient and faster, and results are also very accurate.
There is a close relationship between leaf area index and photosynthesis rate. The leaf area index is large, the amount of leaves is large, the utilization of light energy is large, and the yield is also large. However, after the increase in leaf area index to a certain extent, the utilization rate of light energy and production decreased. The study of the leaf area index of D. officinalis has not been reported, and the current consensus view on the bamboo species that have been studied is that a leaf area index of 7 or slightly higher than 7 is reasonable and the yield is the highest.
The determination of the leaves of Dianthus chinensis by the leaf area detector and the analysis of relevant yields revealed that when the average diameter of the stands was 2 cm, the stand density was 36000 to 3,750 plants #hm-2, and the leaf area index was close to 7. At this time, the stand density is the most reasonable. Similarly, when the average diameter is 3 cm, the stand density is 30,000-33,000 plants #hm-2, and the leaf area index is about 7 which is the most reasonable. Because the diameter of the high-yield bamboo forest in Dianthus is generally 2~3cm, the analysis results suggest that the density of the high-yielding forest of Dianthus hirsutus is the most reasonable and the yield is also the highest.
In dianthus, the dianthus is 014~4cm in diameter, 1 step in every 015cm, 3 standard bamboos in each diameter order, all the leaves are taken after felling, and the leaves taken from each standard bamboo Use a plastic bag to fasten the bag and measure it as soon as possible. In this test, the leaf area was measured using the paper-cut weighing method. That is, each piece of bamboo is drawn on squared paper with standard square paper and the paper die is cut to weigh its weight, and then the relationship between the weight and the area is proportional to: leaf area = whole area @ cut off the piece of paper The weight of the whole/heavy paper is the final average of the area of ​​the three standard bamboo leaves. Leaf area detectors can also be used for detection, which is more convenient and faster, and results are also very accurate.
There is a close relationship between leaf area index and photosynthesis rate. The leaf area index is large, the amount of leaves is large, the utilization of light energy is large, and the yield is also large. However, after the increase in leaf area index to a certain extent, the utilization rate of light energy and production decreased. The study of the leaf area index of D. officinalis has not been reported, and the current consensus view on the bamboo species that have been studied is that a leaf area index of 7 or slightly higher than 7 is reasonable and the yield is the highest.
The determination of the leaves of Dianthus chinensis by the leaf area detector and the analysis of relevant yields revealed that when the average diameter of the stands was 2 cm, the stand density was 36000 to 3,750 plants #hm-2, and the leaf area index was close to 7. At this time, the stand density is the most reasonable. Similarly, when the average diameter is 3 cm, the stand density is 30,000-33,000 plants #hm-2, and the leaf area index is about 7 which is the most reasonable. Because the diameter of the high-yield bamboo forest in Dianthus is generally 2~3cm, the analysis results suggest that the density of the high-yielding forest of Dianthus hirsutus is the most reasonable and the yield is also the highest.