Studies over the years have shown that amino acid fertilizers can promote the absorption of nutrients by crops and increase the nutrient content of crops.
Zahir et al found that a certain concentration of tryptophan significantly increased the absorption of N and the concentration of N, P and K in the tuber, but had no effect on the yield of potato tubers and straw and the absorption of P and K. Arshad et al. [19] showed that a certain concentration of tryptophan in soil could significantly increase the plant height, stem and root dry matter quality and biomass of cotton, increase the number of branches per plant, the number of flowers and the number of bolls, and increase cotton. The concentration of N, P, and K in the tissue. Chen Zhende et al. studied the effects of L-tryptophan on the yield and nutrient uptake of potted cabbage. The results showed that L-tryptophan could significantly increase the yield and dry matter accumulation of cabbage during the first week before transplantation. Promote the absorption of N, P and K by cabbage plants, increase the distribution of N and P in the leaves, and reduce the accumulation of K in the leaves.
The results of Franken-berger et al. also showed that the N-absorption of radish, watermelon and melon increased significantly after L-tryptophan was applied. Chen Mingchang and other research results show that after the application of L-tryptophan and L-methionine, the absorption of various nutrients in corn increased significantly, and the effect of L-tryptophan was particularly prominent; at the same time, P, Ca, Mg, Fe The absorption of Mn, Cu, and Zn is also improved. The reason why amino acid multi-element fertilizer can promote the efficient use of nutrients in crops may be as follows: 1 increase the synthesis of hormones in crops, and then promote the absorption of nutrients; 2 promote the growth of crop roots and improve the ability to absorb nutrients; 3 increase the expression of amino acid transporters in crop roots. To make it easier to absorb nutrients.
