Main cultivated varieties of macadamia nut in China

Guangxi Agricultural Reclamation was the first country to carry out macadamia nut productive cultivation in China. From the late 1980s to the mid-1990s, Guangxi Huashan Farm and Guangxi Jinguang Farm successively developed macadamia nuts, and then Yunnan and Sichuan developed one after another. due to the lack of sufficient data in China, most of the macadamia nuts planted in China choose varieties with excellent performance in Hawaii and Australia. For example, 34, 66, 74, 80, 78, etc. at the same time, due to lack of understanding of varieties and lack of provenances, foreign eliminated varieties 24, H2 and 33 were also used at the same time.

In the 1990s, Guangxi, Guangdong, Yunnan and other provinces (autonomous regions) in China stepped up the introduction of macadamia nut varieties, and 57 varieties were introduced by Guangxi subtropical crop Research Institute. Hawaii, Australia and other major producing areas of the world have obtained the main cultivated varieties and a considerable number of new selected varieties. However, the adaptation area of macadamia nut varieties is narrow, and many varieties with high yield and high quality abroad do not perform well in China. According to Chen Xianguo's research (2000), 34, 66, 74 and 800 varieties, which are widely planted in Hawaii and Australia, have low yields in Guangxi, and the performance of these varieties in Yunnan and Sichuan is also not satisfactory. According to the current research and trial planting, 69, 78, 90 and Own choice4 perform well and are suitable for planting in mainland China.

(1) 69,000. Coarse shell species, the crown is compact and erect, the top dominance is weak, the tree potential is weak, the trunk lateral branches are distinct, early bearing and high yield, flowering and fruiting 1-2 years earlier than other varieties.

(2) 78 million. The top advantage of the plant is very strong, the crown is narrow and erect, the first-class kernel rate is about 41%, and the florescence is 5-10 days earlier than other varieties.

(3) 90 years. Coarse shell species, the top dominance of the plant is not strong, the branches are easy to bend, the crown is whirling, the fruit and seeds are larger than other varieties, the average single species weight is 12.7 grams, the maximum single species weight is 19.5 grams.

(4) Own choice. This is an Australian variety with slender and many branches, a large shade of the crown, serious fruit sticking and uniform seeds.