Extenders are actually some plant growth regulators. Generally speaking, gibberellin is the most important one, and then some other growth regulators, such as benzylaminopurine and triacontanol, are added.

These growth regulators can promote growth, promote rapid cell division, not only lengthen fruit shape, but also play a certain role in promoting fruit setting. Under the same management, apples with growth regulators grow better.

Generally speaking, the combination of these growth regulators is used in full bloom, some are used once, and some need to be used twice. There are some differences in the use of different formulations, and the most important thing is to spray it on the receptacle.

The growth period of fruit radish is short and the field management is relatively simple. If it rains before seedling emergence in the open field, it may cause soil hardening, so it is necessary to loosen the soil in time to make the germinated seeds unearthed smoothly. Less watering at seedling stage is beneficial to inhibit aboveground growth. It takes about 15 days from laparotomy to fleshy root formation. In the meantime, it is necessary to keep the soil moist, but not too dry. Water evenly, and the soil moisture content is 70% ~ 80%. If the water is insufficient, the fibrous roots of fleshy roots will increase, resulting in rough skin, strong spicy taste and chaff heart. Pay attention to keep warm and cold in winter. After emergence, keep it at 15 ~ 20℃ during the day and at 8 ~ 10℃ at night, and it shall not be lower than 5℃. During the day after the seedlings were broken and the fleshy roots swelled, the greenhouse temperature was kept at 13 ~ 18℃. Generally, topdressing is not needed during the growing period. If the plant is too short or the leaves are yellow, a small amount of available nitrogen fertilizer and water can be applied and 0.3% potassium dihydrogen phosphate solution can be sprayed. Timely intertillage weeding is beneficial to keep the soil loose, prevent the surface soil from hardening and promote the normal expansion of fleshy roots.