番茄有关农学知识（Knowledge of Agronomy about tomatoes）.docVIP

番茄有关农学知识（Knowledge of Agronomy about tomatoes） Tomato baiwenbaida Q: tomato fruit Tomato baiwenbaida Question: tomato knot is not very round fruit, but from the edge bulge, what is the reason? [L] answer: in shed tomato production, this kind of arris rises the fruit with more, be mixed with the excessive leaf in tomato management is concerned. Many local farmers to increase the fruit coloring, late leaves painted all around the fruit are removed, leaving only some 2-3 leaf. This caused leaf area is too small, can not have a root nor for fruit, eventually led to the fruit not organic nutrient rich, the filling cavity is lack of fruit carpel development in a depression state, and the cavity wall is high, formed from the edge phenomenon. This fruit is not round, contain less, light weight, poor taste, low sugar content, will result in a decrease of 25%-30%. [/L] [L] solution is to change the excessive thinning of the old habits of leaves, not to pursue the color, forget the loss of production, picked up sesame, lost watermelon. [/L] [L] asked: tomato leaves very crisp is how is it? [/L] [L] answer: boron deficiency can cause leaves to become brittle, and can be sprayed with fast boron, borax or borax, a growth of Ji Pen with 2-4 times. Can also be underground per mu with borax, one kilogram of boron supplementation. Then, fungicides or other pesticides in the use of high concentrations will lead to brittle tomato leaves, attention should be paid to the use of pesticides concentration should be reasonable. [/L] [L] asked: a lot of tomato fruit sprayed with umbilical rot, but there are a few calcium, how to do? [/L] [L] answer: tomato raw umbilical rot disease, the reason is related to calcium deficiency, but should pay attention to specific analysis, first, the northern land is not calcium deficiency, but not excessive water control, so that plants drought. Two is the supplement of boron, boron deficiency will cause calcium deficiency. And the introduction of boron defi