Is the late autumn shoot coming out of the orange tree in Shatang now?
Excuse me, are the late autumn shoots coming out now? My Shatang tangerine will be trial-produced next year. Will it be released or erased this time? When is the flower bud differentiation? When does the ring cut start?
At present, it is late autumn, about 20 days from the Beginning of Winter's festival. Sand sugar orange in the late autumn, of course, belongs to the late autumn shoot. The initiation time of flower bud differentiation of sand sugar orange usually begins at the end of October or the beginning of November. That is, before this time, the non-autumn shoots of the plants that need to be arranged to hang fruit the following year should be fully mature before the flower bud differentiation period. Therefore, if the late autumn shoot is being pulled out at present, it should be erased. If the tree potential is general, it is appropriate to spray 750ppm paclobutrazol once, and then spray once every 20 days. If the plant is strong and vigorous, the fertilizer and water management is good in the early stage. Ring cutting can be carried out at the end of October.
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Key points of cultivation techniques of parent fish in winter
The cultivation of parent fish can be divided into postpartum nursing, autumn cultivation, winter cultivation and spring cultivation. Due to the low temperature in winter, the activities of parent fish are reduced, the feeding ability is weak, and fish diseases are easy to occur. If it is poorly managed, it will have a great impact on artificial hatching, fry production, adult fish culture and other production links in the coming year. The main technical points for the cultivation of parent fish in winter are as follows: first, the selection of parent fish pond requires sufficient water source, flat bottom, shelter from the wind and sun, water conservation and heat preservation, with an area of 10-15 mu.
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Malnutrition causes fish diseases
With the rapid development of factory breeding, formula feed is used more and more widely. However, some formula feed can not meet the nutritional needs of fish due to raw material problems or preparation technical problems. In particular, the feed designed and produced by small feed factories and farmers may cause undernutrition or overnutrition, which will lead to the decline of fish physique and, in serious cases, fish death. This paper will discuss the causes of fish diseases from the aspect of nutrition, in order to guide farmers to take timely measures to prevent fish diseases in culture production.
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