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Sugar orange flower promotion techniques: when to promote flowering, how to promote flowering, and whether girdling is needed
Flower promotion techniques for sugar oranges
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Five observations to tell whether a watermelon has set fruit
First, look at the female flower's morphological features. In early-maturing watermelon varieties, the ovary is generally round (a few are oblong); female flowers with few hairs, a thick and long fruit stalk, and larger petals set fruit easily. For oval-fruited melons (mostly mid- to late-maturing varieties), the ovary is oblong, and female flowers with many hairs, a thick and long fruit stalk, and large petals set fruit easily; otherwise they set fruit with difficulty...
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What are the methods for judging whether a watermelon is ripe?
1. Accumulated temperature method. Watermelons need a certain amount of accumulated temperature from flowering to ripening. Generally, early and mid-season varieties need 700--800°C from flowering to ripening, while late varieties need about 1000°C. Therefore, under conditions of timely sowing in spring and normal climate, the fruit development days of each variety are basically fixed. Early varieties need 28--3...
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