First, shading, shorten the sunshine time
In the photoperiodic reaction type, Loofah is a short-day plant. At present, the length of sunshine in the shed is about 13 hours, and the night time is about 11 hours. It can no longer meet the conditions for flowering of some varieties. It can cause poor flower bud differentiation, reduced flowering numbers, and the phenomenon of “resting†in summer. In order to avoid this happening, shade nets or grass braids can be covered in the shed to shorten the sunshine hours, and can also be sprayed with the plant growth regulator ethephon to promote female flower differentiation before summer loofah emerges. Increase flowering rate.
Second, control the anti-long loofah
Although the loofah is resistant to heat and temperature, the current greenhouse temperature environment is not conducive to the growth of fruits. The daytime temperature is maintained at about 35°C, photosynthesis is carried out at high speed, and it can be maintained at a high night temperature of about 26°C overnight, making the photosynthetic organic matter of the leaves mostly used for its own respiratory consumption. The loofah plants appear to be prosperous and grow in length, and organic matter. Very little. In addition, in the loofah nitrogen fertilizer, phosphorus and potassium fertilizer deficiency, the lack of boron fertilizer, will increase the loofah prosperous, poor flower bud differentiation, is not conducive to flowering fruit set.
In view of the above, on the basis of controlling the amount of nitrogen fertilizer used, spraying 5% of Chlormequat 2000 to 3000 times liquid or 25% of Chlormeson 750 to 1500 times liquid to control the growth, or artificially picking the heart, that is, at the loofah growing point The following is about 30 cm.
YT-T11
YT-T11
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