In fact, cashews, like other nuts, have a very strong shell, but the difference is that the shell of cashews contains highly toxic and corrosive shell oil, which will corrode the skin, so it must go through a special and exquisite shelling process before eating. However, Wang said that although cashew nuts are poisonous, the edible safety of cashew nuts after shelling will not be affected.
Extended data:
Growth habit
Cashew nuts have strong adaptability and are warm-loving and strong positive tree species. Drought tolerance is not barren, and it has certain wind resistance. It is advisable to grow below 400 meters above sea level. The requirements for soil are not high, except for heavy clay and limestone, it can grow in red soil, sandy soil or rocky mountain with soil organic matter content less than 1%.
Cashew nuts are not cold-tolerant, and high temperature is needed in the growing period. The average monthly temperature is 23-30℃, and it blooms and bears fruit normally, but grows slowly at 20℃. Below 17℃, it is vulnerable to freezing injury, and below 15℃, it is seriously injured and killed. The annual sunshine is more than 2000 hours, and the annual precipitation is 1000- 1600 mm, which is not suitable for planting in areas where the groundwater level is too high or there is water in rainy season. The flowering period avoids rainy days.
The peak growth period is generally in the early rainy season. The main root of 4-5-year-old trees is 5 meters deep and the lateral roots are developed, and the lateral roots of 6-year-old trees are about 7 meters long. It blooms 2 years after planting, bears fruit in 3 years, and enters the full fruit period after 8 years, which is 15-25 years.
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