After entering the fruit-bearing period, bitter gourd often has male flowers without pollen, which makes artificial pollination impossible.
1. Cause:
There are many reasons for the pollen-free male flower pollen, such as continuous rain and low temperature and low light, prosperity, and lack of nutrients.
The male flower that opened just after Lianyin Tian was formed before Lianyin Tian, ​​so it was quite normal. However, the male flowers formed during the cloudy day often develop deformities and cannot form pollen. In addition, when it is cloudy, the absorption capacity of the root system is reduced, the transportation process is longer, and the nutritional deficiencies during the differentiation of the flower buds increase the effect, and eventually lead to no pollen in the male flowers. Therefore, 2 to 3 mature male flowers after cloudy days often have less pollen, and the pollen quality used for flower reduction is reduced, and the number is limited.
2. Remedial measures:
In view of the above, it is recommended that vegetable growers use growth regulators to assist in sitting melons. You can use 5 ml of clopidogrel, 2 kg to 2.5 kg of water, wipe melon or melon with a brush or watering can. At the same time, seaweed foliar fertilizer plus total nutrient foliar fertilizer is sprayed on the branches of melon, to supplement nutrition and promote the growth of leaves, branches and melon sticks.
In addition, the "special pollinator for bitter gourd" currently available on the market can be continuously sprayed to optimize the differentiation of flower buds and simultaneously supplement foliar nutrition.
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