2. Sticky or wet hands indicate a lack of freshness.
3. stare at the nuts exposed in the cracks. Dew is bright and green, good goods; The exposed endothelium is light in color, and the skin is tight and wrinkled, indicating that the nuts are full and good; Dew is yellow or brown, old or moldy.
4. Ripe cashews will give off bursts of fragrance.
Cashew nuts are native to northeast Brazil, within south latitude 10. /kloc-was introduced to Asia and Africa in the 6th century, and now it has spread all over East Africa and South Asia. Countries with large cashew planting area in the world include India, Brazil, Vietnam, Mozambique and Tanzania.
In China, cashew nuts are mainly distributed in Hainan and Yunnan, and introduced from Guangxi, Guangdong, Fujian and Taiwan Province provinces.
Extended data
Growing habits:
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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