Ch\u00fang ta \u0103n ng\u00f3 sen t\u01b0\u01a1i non tr\u1eafng, b\u1ebb \u0111\u00f4i n\u00f3, s\u1ebd th\u1ea5y c\u00f3 r\u1ea5t nhi\u1ec1u nh\u1eefng s\u1ee3i t\u01a1 m\u1ea3nh n\u1ed1i li\u1ec1n c\u00f3 th\u1ec3 k\u00e9o d\u00e0i h\u01a1n 10 cm. N\u1ebfu \u0111\u1eb7t d\u01b0\u1edbi k\u00ednh hi\u1ec3n vi quan s\u00e1t, nh\u1eefng s\u1ee3i t\u01a1 n\u00e0y c\u00f3 h\u00ecnh xo\u1eafn \u1ed1c, gi\u1ed1ng nh\u01b0 m\u1ed9t chi\u1ebfc l\u00f2 xo d\u00e0i, \u0111\u00e2y l\u00e0 nh\u1eefng \u1ed1ng d\u1eabn v\u00e2n xo\u1eafn \u1ed1c m\u00e0 trong ng\u00f3 sen \u0111\u1eb7c bi\u1ec7t c\u00f3.<\/p>\n\n\n\n
C\u00f3 m\u1ed9t v\u1ecb thu\u1ed1c \u0110\u00f4ng y g\u1ecdi l\u00e0 \u0111\u1ed7 tr\u1ecdng. N\u00f3 l\u00e0 v\u1ecf c\u00e2y \u0111\u1ed7 tr\u1ecdng, khi b\u1ebb n\u00f3 ra c\u0169ng s\u1ebd xu\u1ea5t hi\u1ec7n s\u1ee3i t\u01a1 tr\u1eafng r\u1ea5t dai. Nh\u01b0ng nh\u1eefng t\u01a1 n\u00e0y v\u1edbi t\u01a1 \u1edf ng\u00f3 sen ho\u00e0n to\u00e0n kh\u00f4ng gi\u1ed1ng nhau. Trong v\u1ecf c\u00e2y \u0111\u1ed7 tr\u1ecdng c\u00f3 r\u1ea5t nhi\u1ec1u \u1ed1ng s\u1eefa ch\u1ee9a nhi\u1ec1u s\u1eefa, l\u00e0 d\u1ecbch t\u1ebf b\u00e0o c\u1ee7a t\u1ebf b\u00e0o \u1ed1ng s\u1eefa, th\u01b0\u1eddng l\u00e0 m\u00e0u tr\u1eafng, d\u1ecbch t\u1ebf b\u00e0o n\u00e0y ch\u1ee9a cao su g\u1ecdi l\u00e0 ch\u1ea5t cao su \u0111\u1ed7 tr\u1ecdng, cho n\u00ean sau khi b\u1ebb \u0111\u1ed7 tr\u1ecdng, s\u1ee3i t\u01a1 \u0111\u00f3 l\u00e0 s\u1ee3i cao su, c\u00f3 s\u1ee9c k\u00e9o dai. Th\u1ef1c v\u1eadt c\u00f3 \u1ed1ng s\u1eefa r\u1ea5t nhi\u1ec1u, nh\u01b0 c\u00e2y d\u00e2u, c\u1ecf m\u1eaft m\u00e8o\u2026 Trong \u1ed1ng s\u1eefa c\u1ee7a m\u1ed9t s\u1ed1 th\u1ef1c v\u1eadt kh\u00f4ng ch\u1ee9a cao su m\u00e0 ch\u1ee9a th\u00e0nh ph\u1ea7n kh\u00e1c.<\/p>\n\n\n\n
Cao su l\u00e0 h\u1ee3p ch\u1ea5t oxit cacbon, n\u00f3 l\u00e0 nh\u1eefng h\u1ea1t nh\u1ecf h\u00ecnh c\u1ea7u ph\u00e2n t\u00e1n trong s\u1eefa. Th\u00f4ng th\u01b0\u1eddng trong \u1ed1ng s\u1eefa c\u1ee7a th\u1ef1c v\u1eadt c\u00f3 ch\u1ee9a tinh b\u1ed9t d\u1ea1ng canxi, protein, m\u1ee1, ch\u1ea5t tannic, ki\u1ec1m sinh v\u1eadt, nh\u01b0ng tuy\u1ec7t \u0111\u1ea1i \u0111a s\u1ed1 l\u00e0 n\u01b0\u1edbc, chi\u1ebfm kho\u1ea3ng 50% – 80%; c\u00f2n trong \u1ed1ng s\u1eefa c\u1ee7a \u0111\u1ed7 tr\u1ecdng l\u01b0\u1ee3ng n\u01b0\u1edbc \u00edt, nh\u01b0ng h\u00e0m l\u01b0\u1ee3ng cao su l\u1ea1i r\u1ea5t cao. S\u1ee3i cao su kh\u1ecfe dai. Cho n\u00ean sau khi b\u1ebb v\u1ecf c\u00e2y \u0111\u1ed7 tr\u1ecdng, c\u00e1c s\u1ee3i t\u01a1 s\u1eefa tr\u1eafng c\u1ee7a n\u00f3 ph\u1ea3i d\u00f9ng s\u1ee9c th\u00ec m\u1edbi c\u00f3 th\u1ec3 k\u00e9o \u0111\u1ee9t. \u0110\u1ed7 tr\u1ecdng l\u00e0 th\u1ef1c v\u1eadt cao su \u0111\u1eb7c s\u1ea3n c\u1ee7a Trung Qu\u1ed1c, h\u00e0m l\u01b0\u1ee3ng cao su trong \u0111\u1ed7 tr\u1ecdng kho\u1ea3ng 3%, trong l\u00e1 \u0111\u1ed7 tr\u1ecdng kho\u1ea3ng 2%, c\u00f2n trong qu\u1ea3 cao t\u1edbi 27,34%.<\/p>\n\n\n\n
Cao su ch\u1ee9a trong \u0111\u1ed7 tr\u1ecdng c\u00f3 \u0111\u1ed9 c\u00e1ch \u0111i\u1ec7n r\u1ea5t cao, \u0111\u1ed1i v\u1edbi ngu\u1ed3n \u0111i\u1ec7n axit h\u00f3a ch\u1eadm, l\u00e0 ch\u1ea5t c\u00e1ch \u0111i\u1ec7n t\u1ed1t trong \u0111\u1ed3 \u0111i\u1ec7n gia d\u1ee5ng, l\u1ea1i do kh\u00f4ng b\u1ecb n\u01b0\u1edbc bi\u1ec3n \u0103n m\u00f2n, l\u00e0 nguy\u00ean li\u1ec7u c\u1ea7n thi\u1ebft cho b\u1ecdc m\u1ea1ng l\u01b0\u1edbi \u0111i\u1ec7n d\u01b0\u1edbi bi\u1ec3n. Ngo\u00e0i ra, c\u0169ng d\u00f9ng trong c\u00e1c d\u1ee5ng c\u1ee5 \u0111\u1ed3 \u0111\u1ef1ng thu\u1ed1c m\u1ea1nh v\u00e0 nguy\u00ean li\u1ec7u h\u00e0n r\u0103ng. V\u1ecf c\u00e2y \u0111\u1ed7 tr\u1ecdng l\u00e0 m\u1ed9t lo\u1ea1i thu\u1ed1c \u0110\u00f4ng y n\u1ed5i ti\u1ebfng c\u1ee7a Trung Qu\u1ed1c, l\u00e0 lo\u1ea1i thu\u1ed1c c\u01b0\u1eddng tr\u00e1ng v\u00e0 c\u00f3 th\u1ec3 ch\u1eefa tr\u1ecb \u0111au m\u1ecfi l\u01b0ng v\u00e0 c\u00e1c lo\u1ea1i cao huy\u1ebft \u00e1p\u2026<\/p>\n","protected":false},"excerpt":{"rendered":"
Ch\u00fang ta \u0103n ng\u00f3 sen t\u01b0\u01a1i non tr\u1eafng, b\u1ebb \u0111\u00f4i n\u00f3, s\u1ebd th\u1ea5y c\u00f3 r\u1ea5t nhi\u1ec1u nh\u1eefng s\u1ee3i t\u01a1 m\u1ea3nh n\u1ed1i li\u1ec1n c\u00f3 th\u1ec3 k\u00e9o d\u00e0i h\u01a1n 10 cm. N\u1ebfu \u0111\u1eb7t d\u01b0\u1edbi k\u00ednh hi\u1ec3n vi quan s\u00e1t, nh\u1eefng s\u1ee3i t\u01a1 n\u00e0y c\u00f3 h\u00ecnh xo\u1eafn \u1ed1c, gi\u1ed1ng nh\u01b0 m\u1ed9t chi\u1ebfc l\u00f2 xo d\u00e0i, \u0111\u00e2y l\u00e0 nh\u1eefng […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[15,19],"tags":[],"class_list":["post-9691","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-tu-nhien"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/9691","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=9691"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/9691\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=9691"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=9691"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=9691"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}