A kind of plant growth regulator for greenhouse rice, its preparation method and application
A rice and greenhouse technology, applied in the direction of plant growth regulators, plant growth regulators, botanical equipment and methods, etc., can solve problems such as low seed setting rate and thousand-grain weight, infection by diseases and insect pests, and weak rice plants, so as to improve the seed setting rate and Effects of 1000-grain weight, increased yield, and dwarf rice stems
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Embodiment 1
[0027] 4.995 parts by mass of prohexadione calcium (active ingredient) and 0.005 parts by mass of brassinolide (active ingredient) were uniformly mixed to obtain an active ingredient mixture;
[0028] The wetting agent of 5 mass parts, the dispersant of 5 mass parts and the light calcium carbonate of pesticide carrier of 85 mass parts are mixed uniformly, obtain auxiliary material mixture;
[0029] The active ingredient mixture and the auxiliary material mixture are uniformly mixed to obtain a wettable powder for plant growth regulation.
Embodiment 2
[0031] The test site is in the greenhouse of the base of China Rice Research Institute (Fuyang City, Zhejiang Province), with a temperature of 30°C / 25°C (day / night) and natural light. The rice variety is Chunjiang 119 (conventional japonica variety). The test materials were sown on November 27, 2012, and transplanted on December 23, with 2 cuttings per cluster.
[0032] One week after transplanting of rice and at the peak tillering stage, it was applied twice, each mu was treated with different dosages of the plant growth regulator prepared in Example 1, the liquid volume was 45 liters / mu, and the leaves were sprayed. The main results are shown in Table 1.
[0033] Table 1 Greenhouse rice (transplanted rice) application yield-increasing effect
[0034]
[0035] *Community area = 7 square meters. Different letters in the same column indicate significant difference at the 5% level.
[0036] As can be seen from Table 1, under the test conditions, the plant growth regulator ...
Embodiment 3
[0038] The test site is in the greenhouse of the base of China Rice Research Institute (Fuyang City, Zhejiang Province), with a temperature of 30°C / 25°C (day / night) and natural light. The rice variety is Chunjiang 119 (conventional japonica variety), and the test material was sown on November 25, 2013 (direct-directed rice).
[0039] Apply twice in 28 days after rice sowing and at the peak tillering stage, each acre is treated with the plant growth regulator provided in Example 1, and the liquid amount is 45 liters / mu, and the leaves are sprayed. The main results are shown in Table 2.
[0040] Table 2 The effect of increasing the yield of greenhouse rice (direct-directed rice) application
[0041]
[0042] *Community area = 7 square meters. Different letters in the same column indicate significant difference at the 5% level.
[0043] As can be seen from Table 2, under the test conditions, the plant growth regulator treatment provided in Example 1 showed a dwarfing effect ...
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